Achievements:
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Complete the task to unlock the following achievements and their alloted gamerscore.
Unlockable How to Unlock
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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.
