Aliens in the Yard

Shoot down 50 saucers

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Make a combo of 5

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Make a combo of 10

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Make a combo of 15

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Stop 50 technology-stealing aliens

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Stop 150 technology-stealing aliens

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Stop 500 technology-stealing aliens

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Shoot down 150 saucers

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Remove 100 plasma bogeys from your face

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Remove 500 plasma bogeys from your face

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Remove 1000 plasma bogeys from your face

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Catch a plasma bogey in flight

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Catch 50 plasma bogeys in flight

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Catch 100 plasma bogeys in flight

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Destroy 100 machinegun saucers

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Destroy 500 machinegun saucers

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Destroy 1000 machinegun saucers

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Destroy 100 shotgun saucers

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Shoot down 1000 saucers

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Destroy 500 shotgun saucers

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Destroy 1000 shotgun saucers

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Destroy 100 super shotgun saucers

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Destroy 500 super shotgun saucers

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Destroy 1000 super shotgun saucers

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Shoot 1000 garbage cans.

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Shoot gravi-cars 10,000 times.

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Shoot down 50 bosses

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Allow the aliens to steal 500 technologies

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Allow the aliens to steal 1500 technologies

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Fire 1,000,000 shots

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Smear 100 weapons with plasma bogeys

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Smear 500 weapons with plasma bogeys

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Shoot down 100 bosses

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Smear 1000 weapons with plasma bogeys

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Shoot down 300 bosses

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Kill 500 aliens

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Kill 1500 aliens

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Kill 3000 aliens

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