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Alien Swarm
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By: Valve
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By: Valve
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Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community. Available free of charge, the game thrusts players into an epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet's surface, to a subterranean lava-flooded mining facility. Along with the game get the complete code base for Alien Swarm that features updates to the Source engine as well as the SDK. Alien Swarm adds 3rd person camera, depth of field, improved dynamic shadows and a wide variety of gameplay additions to the Source engine.
PC (Microsoft Windows) · Jul 10, 2010
Worldwide · Exact date · IGDB
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66 achievements available.
Complete a mission with better than 90% accuracy.
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Heal 300 points of damage in a single mission without dealing any non-melee damage to the Swarm.
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Deploy 10 ammo stashes that are used by other marines.
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Kill 250 Swarm with an Autogun.
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Kill 5 Swarm with explosive barrels in a single mission.
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Kill a Swarm Boomer before it inflates.
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Complete a campaign on Normal difficulty or harder without any marines dying.
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Kill 250 Swarm with a Chainsaw.
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Roll under a Swarm Ranger projectile.
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Complete the Jacob's Rest campaign on Easy difficulty or harder.
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Destroy all Swarm Eggs in a mission without allowing any to hatch.
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Complete 10 computer hacks without access being logged.
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Successfully perform a fast reload.
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Successfully perform 5 fast reloads in a row.
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Complete 10 wire hacks without access being logged.
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Kill 250 Swarm with a Flamethrower.
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Freeze 6 Swarm with a single Freeze Grenade.
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Kill 250 Swarm with a Grenade Launcher.
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Kill 6 Swarm with a single Grenade.
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Kill 15 Swarm with all four marines under the effects of a Damage Amp in a single mission.
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Heal all 4 marines with a single Heal Beacon.
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Kill 100 Swarm Grubs.
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Complete any mission on Brutal difficulty with Onslaught and Hardcore Friendly Fire enabled.
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Complete the Jacob's Rest campaign on Hard difficulty or harder.
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Kill 100 Swarm with Hornet Barrages.
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Awarded for finishing the Jacob campaign on Brutal difficulty.
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Cure an Infested marine.
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Awarded for finishing the Jacob campaign on Insane difficulty.
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Kill 1,000 Swarm.
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Kill 5,000 Swarm.
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Kill 25,000 Swarm.
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Kill 100,000 Swarm.
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Kill 25 drones without friendly fire. Four marines must be present in the mission.
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Kill 100 Swarm with Laser Tripmines.
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Kill 20 Swarm with melee attacks in a single mission.
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Kill a Swarm Parasite with a melee attack.
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Kill 100 Swarm with Incendiary Mines.
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Kill 250 Swarm with a Minigun.
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Complete a mission on Normal difficulty or harder without any marines dying.
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Complete the Jacob's Rest campaign on Normal difficulty or harder.
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Complete a mission on Normal difficulty or harder without receiving any damage.
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Complete a mission with no friendly fire incidents. Four marines must be present in the mission.
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Complete 2 co-op missions online. Earns a Team Fortress 2 parasite hat.
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Kill 250 Swarm with PDWs.
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Kill 250 Swarm with Twin Pistols.
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Kill 250 Swarm with a Prototype Rifle.
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Guard the squad's tech so that he takes no damage during the hack.
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Kill 250 Swarm with a Rail Rifle.
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Kill 250 Swarm with the Assault Rifle.
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Kill 500 Swarm with deployable Sentry Guns.
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Deliver the finishing blow to a Swarm Shieldbug.
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Kill 250 Swarm with a Shotgun.
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Kill 250 Swarm with a Marksman Rifle.
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Complete Deima Surface Bridge within 2:30 on Normal difficulty or harder without any marines dying.
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Complete Cargo Elevator within 2:50 on Normal difficulty or harder without any marines dying.
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Complete Landing Bay within 1:25 on Normal difficulty or harder without any marines dying.
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Complete SynTek Residential within 2:30 on Normal difficulty or harder without any marines dying.
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Complete Rydberg Reactor within 3:10 on Normal difficulty or harder without any marines dying.
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Complete Sewer Junction within 1:30 on Normal difficulty or harder without any marines dying.
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Complete Timor Station within 4:25 on Normal difficulty or harder without any marines dying.
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Stun 6 Swarm with a single Stun Grenade.
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Finish a mission without the tech getting killed.
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Kill 250 Swarm with a Tesla Cannon.
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Unlock all the available weapons.
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Kill 250 Swarm with a Vindicator.
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Seal a door with the welder.
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Community notes
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