Complete the task to unlock the following achievements and their alloted gamerscore.
Achievement Description 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.
Contributed By: GenmaNinja.
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