| Achievement | How to unlock
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|---|
| AI Destroyer (22 points) | Defeat robot boss in stage 6.
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| AI Destroyer Mark II (22 points) | Complete Stage 11-2/defeat Gibletor again.
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| Alien Anihilator (22 points) | Defeat 25 aliens.
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| Attackinator (22 points) | Collect 25 extra attack powerups.
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| Barista Brawler (22 points) | Complete game with Ashley.
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| BR00TAL (22 points) | Complete game on Metal difficulty.
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| Caffeine Addict (22 points) | Earn enough energy points in minigame to earn a 1up.
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| Coffee Chugger (22 points) | Complete mini-game.
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| Coffee forgin' (22 points) | Complete stage 1.
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| Cog in the Machine (22 points) | Complete Stage 12.
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| Country Punchkin (22 points) | Complete stage 5/defeat Skinny Chestknee.
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| Effing Overlord (22 points) | Complete stage 10/defeat Overlord.
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| Enemy Abductor (22 points) | Defeat 25 enemies.
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| Extra Cheese (22 points) | Activate a level password.
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| Galactic Savior (32 points) | Complete Stage 14-2/defeat Harvester.
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| Groupie Playa (22 points) | Complete Stage 13.
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| Guitar Shredding (22 points) | Use a Guitar weapon.
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| Head Banging (22 points) | Complete Stage 13-2/defeat Metal Head boss.
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| I am Alien Chow (22 points) | Lose 25 lives.
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| I'm Invincible! (22 points) | Collect 25 invincibility powerups.
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| I'm the Boss Now (22 points) | Beat a boss with max health.
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| Industrial Sabotage (22 points) | Complete stage 6.
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| Iron Savior (22 points) | Complete game with Nick.
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| Jared the Mayonaise (22 points) | Kill 25 Mayo enemies.
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| Livin' it up (22 points) | Collect 25 lives.
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| Lurker (22 points) | Make Metal Head Boss spawn 5 sets of enemies/play complete song within a single fight.
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| Making the Dream Work (22 points) | Complete game in co-op mode.
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| Martian Maniacs (22 points) | Complete stage 8.
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| Metal Master (22 points) | Complete Death Metal difficulty under 1 hour 15 minutes.
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| Mosh Pit (22 points) | Complete Stage 14.
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| Payback (22 points) | Use a Grey Alien Arm weapon.
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| Repent, Sinner! (22 points) | Complete Stage 8-2/defeat Alpha Omega Sin.
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| Riverside Savage (22 points) | Complete stage 4.
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| Rocking the Metal Jesus (22 points) | Complete Stage 4-2/defeat Metal Jesus Rocks.
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| Search Your Feelings (22 points) | Complete stage 9/defeat Darth B.
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| Smell of Cheaters in the Morning, The (22 points) | Activate a cheat code.
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| Speed Metal (22 points) | Complete Death Metal difficulty under 1 hour 30 minutes.
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| Straight Outta the Street Act 2 (22 points) | Complete Stage 11.
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| Straight Outta' the Park (22 points) | Defeat bouncers in stage 3.
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| Straight Outta' the Street (22 points) | Complete stage 2.
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| Strike Out (22 points) | Complete stage 3.
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| Trippin' It up (22 points) | Complete stage 7.
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| ÜBER BR00TAL (22 points) | Complete game on Death Metal difficulty.
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| You Can Probe me Any Time (22 points) | Defeat Big Blue Alien miniboss.
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| You've Done this Before (22 points) | Earn an extra life from high score.
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