| Achievement | How to unlock
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| 3×50 (30 points) | In any single level, purge at least 150 enemies, killing a minimum of 50 with each weapon type.
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| Aint No Rookie (10 points) | Complete the boot-camp without taking damage.
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| All Hail The G Man (50 points) | Complete 40 pages of endurance in hard mode.
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| Army Of One (50 points) | Kill 10,000 martians.
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| Boom Boom (30 points) | Use a launcher weapon to kill 10 martians in a single blast.
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| Completist (40 points) | Complete the game in all three difficulty settings.
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| Crispy (10 points) | Purchase the lightning gun.
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| Fully Loaded (40 points) | Get 2000 rounds of ammo into your minigun.
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| Getting Started (10 points) | Kill 1,500 martians.
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| Gifted (10 points) | Complete 10 pages of endurance in easy mode.
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| Hat Trick (30 points) | Upgrade all three weapon-types in a single visit to a vending machine.
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| High Flier (20 points) | Collect all meteor rocks in a chapter.
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| Home Coming (20 points) | Complete the army-base chapter.
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| Ka-boom (10 points) | Purchase the plasma launcher.
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| Martian Purger (30 points) | Kill 5,000 martians.
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| Mean Streets (30 points) | Complete the city chapter.
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| No Sweat (20 points) | Complete 20 pages of endurance in normal mode.
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| Pacifist (30 points) | Complete a level without firing a weapon or receiving any damage.
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| Rooted (40 points) | In story mode, city chapter, defend one spot turning left and right, but don't move for 2 mins.
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| Rush-a-holic (40 points) | Grab all rush crates in story mode.
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| Space Marine (10 points) | Complete the Moon chapter.
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| Super Market Sweep (40 points) | Buy all available items in a single visit to a vending machine.
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| Sustain (30 points) | Purge 50 enemies in a single beam-attack (one press of the fire button).
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| To The Teeth (30 points) | Purchase all weapons.
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| Vending Machine Ping Pong (30 points) | In story mode, army-base chapter, access both vending machines, alternating between them 5 times.
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| Yeah Baby (10 points) | Purchase the minigun.
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