| Achievement | How to unlock
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| - Survive 15 levels with 10% health or less.
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| - Switch the radio station 10 times in one level.
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- Beaver Head Problems (2,000 XP)
| - Take off 100 beaver helms.
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- Bug Infestation (1,000 XP)
| - Let the bugs shoot you 100 times.
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| - Burn 20 enemies with one Molotov.
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- Feed Cousin Roy (1,000 XP)
| - Cousin Roy has to destroy 100 flying creatures.
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- Flying Oil Can (1,000 XP)
| - Shoot the Oil Can while it is in the air.
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| - Finish a single level 10 times.
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| - Buy wood to protect the house.
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| - Survive 15 levels with 100% health.
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- M-M-M-Monster Kill! (3,000 XP)
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| - Upgrade 5 weapons to maximum.
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- Mosquito Busters (2,500 XP)
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| - Kill 5 enemies with shotgun in one shot.
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- Never Giving Up (1,000 XP)
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| - Upgrade 15 weapons to maximum.
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| - Upgrade one weapon to maximum.
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- Quick Mission Rookie (1,000 XP)
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- Quick Mission Specialist (2,500 XP)
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- Quick Mission Veteran (5,000 XP)
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- Shoot First, Ask Later (1,500 XP)
| - Kill 1,000 enemies with Minigun.
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- The Art of Persistence (2,000 XP)
| - Lose the same level 10 times.
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| - Finish UFO level without shooting down any UFO's.
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| - Kill 1,000 enemies with Alien Gun.
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