Successfully complete the indicated task to unlock the corresponding achievement. To view your achievements and stats in Steam, select "Community", "My profile", "View all my games", then the game and view stats.
- Above and Beyond: Get 10 stars on one level.
- Admiral: Get at least 100 stars in the campaign.
- Bot Buster: Win 5 deathmatches with Bots.
- Captain: Get at least 60 stars in the campaign.
- Death Proof: Beat every level without dying.
- DieHard: Beat a level without dying.
- Ensign: Get at least 40 stars in the campaign.
- Excavator: Find all secrets in the campaign.
- First Impressions: Kill 50 enemies.
- Frenemies: Finish a duel match with a local player.
- Hidey-Hole: Find a secret area.
- Maximum Synergy: Complete all levels in CO-OP.
- Pacifist: Complete 5 levels without firing a shot.
- Rookie: Get at least 20 stars in the campaign.
- Stone Age: Complete a level in the Armless arcade mode.
- Survivalist: Get at least 4000 points in Survival arcade mode.
- Synergy: Complete a level in CO-OP.
- Xenocide: Kill all enemies in 5 levels.