Annihilator (10): Kill more than 85% of the total enemies in a zone.

Assault Hero (30): Complete the game.

Exterminator (10): Defeat the giant spider.

Lair Slayer (10): Complete all underground zones.

Peace Maker (20): Finish a zone killing less than 50% of the enemies.

Sharp Shooter (10): Don't waste more than 30% of your bullets.

Small Arms Expert (20): Finish a zone without using grenades or nukes.

Speed Freak (20): Finish a zone in less than 15 minutes.

Survivor (20): Finish a zone killing 60% of the units on foot.

Tricked Out (20): Max out all of the vehicle power-ups.

Twin Medal (20): Finish a zone in Co-op mode.

Unstoppable (10): Finish a zone without losing a life.