By: Slug Disco, Hooded Horse
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Lead your Ant Colony to Dominance! Empires of the Undergrowth is an ant colony management game, in a fast-paced real-time strategy style. The player excavates their nest underground, constructing tunnels and chambers to store food and raise brood. On the surface, the ants claim territory, gather resources, overwhelm fearsome arachnids and clash with other colonies. Nest design, army size, composition and attack timing are key to securing victory. Missions are narrated from the perspective of a documentary film maker studying the ants, who offers intelligent insight into the goings-on of the colony and the undergrowth beyond. The primary game mode in early access is Formicarium, where you take ownership of a home colony of unique DNA-harvesting ants as they work to assimilate the desirable traits of their foes. You can upgrade them by playing one-off missions, sometimes with your home colony and sometimes with other ant species.
Mac · Dec 1, 2017
Worldwide · Exact date · Early access · IGDB
PC (Microsoft Windows) · Dec 1, 2017
Worldwide · Exact date · Early access · IGDB
Mac · Jun 7, 2024
Worldwide · Exact date · Full release · IGDB
PC (Microsoft Windows) · Jun 7, 2024
Worldwide · Exact date · Full release · IGDB
Catalog sources
186 achievements available.

Beat "New Home" before 10 mole crickets have attacked with the challenge active.
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Beat "New Home" on impossible difficulty after 50 mole crickets have attacked with the challenge active.
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Beat "New Home" on extreme difficulty without letting any enemies within 3 tiles of the queen.
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Beat "New Home" on hard difficulty within 17 minutes.
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Beat "New Home" on impossible difficulty with the last 10 tunnelled out creatures being woodlice.
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Beat "New Home" on medium difficulty without upgrading any soldiers.
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Beat "Subjugation" after getting a cricket to eliminate a funnel web spider with the challenge active.
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Beat "Subjugation" on impossible difficulty after losing at least 50 larvae to the slave makers with the challenge active.
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Beat "Subjugation" on extreme difficulty after losing over 80% of the brood to a single wave of slave makers.
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Beat "Subjugation" on hard difficulty after eliminating 10 funnel web spiders in the first 6 minutes.
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Beat "Subjugation" on impossible difficulty after losing no more than 1 egg to the slave makers.
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Beat "Subjugation" on medium difficulty within 16 minutes.
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Beat "Rising Tide" without building additional workers with the challenge active.
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Beat "Rising Tide" on impossible difficulty after eliminating 50 beach tiger beetle larvae with the challenge active.
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Beat "Rising Tide" on extreme difficulty after eliminating two tiger beetles before the first night.
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Beat "Rising Tide" on hard difficulty without enemies entering your nest.
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Beat "Rising Tide" on impossible difficulty after eliminating the large sand bear wolf spider to the south of the nest.
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Beat "Rising Tide" on medium difficulty after returning the full unharvested sardine to the ocean.
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Beat "Queen of the Hill" with the challenge active after eliminating all the tiger beetle larvae.
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Beat "Queen of the Hill" on impossible difficulty after eliminating 3 large hermit crabs with the challenge active.
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Beat "Queen of the Hill" on extreme difficulty without building any melee wood ant brood tiles.
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Beat "Queen of the Hill" on hard difficulty after harvesting and bringing home 100 food from a fish.
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Beat "Queen of the Hill" on impossible difficulty without upgrading any ranged wood ant brood tiles.
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Beat "Queen of the Hill" on medium difficulty after fending off two ladybirds within 30 seconds of each other from separate aphid clusters.
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Beat "The Harvest" with no casualties from phorid flies with the challenge active.
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Beat "The Harvest" on impossible difficulty after clearing 4 plants of phorid flies with the challenge active.
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Beat "The Harvest" on extreme difficulty without digging out any underground enemies.
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Beat "The Harvest" on hard difficulty before the enemy colony harvests 5000 leaves.
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Beat "The Harvest" on impossible difficulty by gathering leaves within 43 minutes.
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Beat "The Harvest" on medium difficulty by eliminating the enemy queen.
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Beat "Front Line" with the challenge active without building any level 3 ants.
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Beat "Front Line" on impossible difficulty after harvesting all the available leaves with the challenge active.
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Beat "Front Line" on extreme difficulty without building any major ant brood tiles.
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Beat "Front Line" on hard difficulty without any army ant scouts reporting back to their colony.
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Beat "Front Line" on impossible difficulty after defeating the huge whip spider before the third day.
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Beat "Front Line" on medium difficulty before the second night.
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Beat "Cold Blood" after collecting all aphids before engaging either enemy colony with the challenge active.
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In "Cold Blood" on impossible difficulty, eliminate 3 fishing spiders within a 30 second interval.
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Beat "Cold Blood" on extreme difficulty after defeating both of the enemy colonies.
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Beat "Cold Blood" on hard difficulty after tunnelling out all underground food before the end of the first day.
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Beat "Cold Blood" on impossible difficulty after alerting both enemy colonies to your presence within the first 5 minutes.
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Beat "Cold Blood" on medium difficulty with both enemy colonies still alive.
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In "A Bridge Too Far", defeat the little black ant colony on the first day you can reach them with the challenge active.
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Beat "A Bridge Too Far" on impossible difficulty after fully constructing 15 bridges with the challenge active.
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Beat "A Bridge Too Far" on extreme difficulty after fully constructing and sacrificing 14 bridges to the rising water.
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Beat "A Bridge Too Far" on hard difficulty without collecting any additional aphids.
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In "A Bridge Too Far" on impossible difficulty, collect all food on the North-West island, and defeat the little black ant colony on the same day.
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Beat "A Bridge Too Far" on medium difficulty after collecting all the aphids.
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Beat "Triage" with the challenge active and no ants being assassinated.
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Beat "Triage" on impossible difficulty with the challenge active without eliminating any assassin bugs.
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Beat "Triage" on extreme difficulty without building any Matabele ant medic tiles.
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Beat "Triage" on hard difficulty with no termite queens left alive.
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Beat "Triage" on impossible difficulty whilst only eliminating termites from a single colony.
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Beat "Triage" on medium difficulty with your queen taking no damage.
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Beat "Drive Them Back" with the challenge active after eliminating 10 assassin bugs within a 2 minute interval.
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Beat "Drive Them Back" on impossible difficulty after eliminating 3 termite queens before they fall to the driver ants.
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Beat "Drive Them Back" on extreme difficulty after closing all stink ant tunnels within 20 minutes.
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Beat "Drive Them Back" on hard difficulty without building or upgrading any Matabele ant soldier tiles.
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Beat "Drive Them Back" on impossible difficulty after stealing 200 termites from driver ants.
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Beat "Drive Them Back" on medium difficulty with all termite colonies still alive.
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Beat "Last Mound Standing" with the emperor scorpion still alive.
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Beat "Last Mound Standing" on impossible difficulty with the challenge active after eliminating the emperor scorpion on the surface.
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Beat "Last Mound Standing" on extreme difficulty by eliminating both termite colonies before they fall to the Matabele raids.
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Beat "Last Mound Standing" on hard difficulty whithout any enemies entering your mound.
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Beat "Last Mound Standing" on impossible difficulty after harvesting 10,000 llignocelluose.
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Beat "Last Mound Standing" on medium difficulty without taking any sun damage.
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Beat "The First Experiment" without unlocking black ants.
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Beat "The Second Experiment" without enemies entering your nest.
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Beat "Possibly the Final Experiment" after placing only a single marker down and not moving ants between groups.
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Beat "The Final Experiment" without a single ant being hit by the Dragantula's charge attack.
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Beat "The REAL Final Experiment" without the scientist's help.
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Beat "New Year's Feast" on extreme difficulty after eliminating all underground enemies.
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Beat "New Year's Feast" on hard difficulty after cutting the long journey in half with a firecracker.
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Beat "New Year's Feast" on impossible difficulty, receive all guests and keep them alive until the end of the level.
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Beat "New Year's Feast" on medium difficulty after rescuing the guests to the west of the nest without engaging the velvet worm.
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Beat the level "New Home".
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Beat "New Home" with the challenge active.
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Beat "New Home" on extreme difficulty with the challenge active.
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Beat "New Home" on extreme difficulty.
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Beat "New Home" on hard difficulty.
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Beat "New Home" on impossible difficulty.
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Beat "New Home" on medium difficulty.
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Beat the level "Subjugation".
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Beat "Subjugation" with the challenge active.
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Beat "Subjugation" on extreme difficulty with the challenge active.
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Beat "Subjugation" on extreme difficulty.
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Beat "Subjugation" on hard difficulty.
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Beat "Subjugation" on impossible difficulty.
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Beat "Subjugation" on medium difficulty.
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Beat the level "Rising Tide".
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Beat "Rising Tide" with the challenge active.
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Beat "Rising Tide" on extreme difficulty with the challenge active.
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Beat "Rising Tide" on extreme difficulty.
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Beat "Rising Tide" on hard difficulty.
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Beat "Rising Tide" on impossible difficulty.
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Beat "Rising Tide" on medium difficulty.
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Beat the level "Queen of the Hill".
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Beat "Queen of the Hill" with the challenge active.
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Beat "Queen of the Hill" on extreme difficulty with the challenge active.
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Beat "Queen of the Hill" on extreme difficulty.
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Beat "Queen of the Hill" on hard difficulty.
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Beat "Queen of the Hill" on impossible difficulty.
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Beat "Queen of the Hill" on medium difficulty.
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Beat the level "The Harvest".
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Beat "The Harvest" with the challenge active.
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Beat "The Harvest" on extreme difficulty with the challenge active.
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Beat "The Harvest" on extreme difficulty.
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Beat "The Harvest" on hard difficulty.
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Beat "The Harvest" on impossible difficulty.
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Beat "The Harvest" on medium difficulty.
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Beat the level "Front Line".
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Beat "Front Line" with the challenge active.
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Beat the level "Front Line" on extreme difficulty with the challenge active.
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Beat "Front Line" on extreme difficulty.
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Beat "Front Line" on hard difficulty.
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Beat "Front Line" on impossible difficulty.
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Beat "Front Line" on medium difficulty.
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Beat the level "Cold Blood".
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Beat "Cold Blood" with the challenge active.
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Beat "Cold Blood" on extreme difficulty with the challenge active.
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Beat "Cold Blood" on extreme difficulty.
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Beat "Cold Blood" on hard difficulty.
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Beat "Cold Blood" on impossible difficulty.
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Beat "Cold Blood" on medium difficulty.
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Beat the level "A Bridge Too Far".
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Beat "A Bridge Too Far" with the challenge active.
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Beat "A Bridge Too Far" on extreme difficulty with the challenge active.
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Beat "A Bridge Too Far" on extreme difficulty.
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Beat "A Bridge Too Far" on hard difficulty.
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Beat "A Bridge Too Far" on impossible difficulty.
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Beat "A Bridge Too Far" on medium difficulty.
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Beat the level "Triage".
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Beat "Triage" with the challenge active.
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Beat "Triage" on extreme difficulty with the challenge active.
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Beat "Triage" on extreme difficulty.
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Beat "Triage" on hard difficulty.
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Beat "Triage" on impossible difficulty.
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Beat "Triage" on medium difficulty.
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Beat the level "Drive Them Back".
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Beat "Drive Them Back" with the challenge active.
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Beat "Drive Them Back" on extreme difficulty with the challenge active.
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Beat "Drive Them Back" on extreme difficulty.
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Beat "Drive Them Back" on hard difficulty.
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Beat "Drive Them Back" on impossible difficulty.
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Beat "Drive Them Back" on medium difficulty.
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Beat the level "Last Mound Standing".
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Beat "Last Mound Standing" with the challenge active.
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Beat "Last Mound Standing" on extreme difficulty with the challenge active.
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Beat "Last Mound Standing" on extreme difficulty.
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Beat "Last Mound Standing" on hard difficulty.
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Beat "Last Mound Standing" on impossible difficulty.
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Beat "Last Mound Standing" on medium difficulty.
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Beat the "Festive Spider" level.
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Beat the "Festive Spider" level with at least half the gifts remaining under the tree.
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Beat the "Festive Spider" level with all gifts remaining under the tree.
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Beat the formicarium challenge "The First Experiment".
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Beat "The First Experiment" on extreme difficulty.
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Beat "The First Experiment" on hard difficulty.
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Beat "The First Experiment" on impossible difficulty.
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Beat "The First Experiment" on medium difficulty.
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Beat the formicarium challenge "The Second Experiment".
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Beat "The Second Experiment" on extreme difficulty.
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Beat "The Second Experiment" on hard difficulty.
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Beat "The Second Experiment" on impossible difficulty.
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Beat "The Second Experiment" on medium difficulty.
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Beat the formicarium challenge "Possibly the Final Experiment".
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Beat "Possibly the Final Experiment" on extreme difficulty.
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Beat "Possibly the Final Experiment" on hard difficulty.
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Beat "Possibly the Final Experiment" on impossible difficulty.
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Beat "Possibly the Final Experiment" on medium difficulty.
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Beat the formicarium challenge "The Final Experiment".
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Beat "The Final Experiment" on extreme difficulty.
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Beat "The Final Experiment" on hard difficulty.
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Beat "The Final Experiment" on impossible difficulty.
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Beat "The Final Experiment" on medium difficulty.
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Beat the formicarium challenge "The REAL Final Experiment".
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Beat "The REAL Final Experiment" on extreme difficulty.
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Beat "The REAL Final Experiment" on hard difficulty.
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Beat "The REAL Final Experiment" on impossible difficulty.
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Beat "The REAL Final Experiment" on medium difficulty.
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Eliminate all of the uber creatures in the "Hungry Spider" level.
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Beat the level "New Year's Feast".
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Beat "New Year's Feast" on extreme difficulty.
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Beat "New Year's Feast" on hard difficulty.
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Beat "New Year's Feast" on impossible difficulty.
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Beat "New Year's Feast" on medium difficulty.
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Community notes

Main game