You are special forces soldier and your mission is to use a big arsenal of weapons to shoot hordes of zombies and mercenaries, choose a suitable weapon for each wave of enemies in order to survive and successfully complete each level. Can be played on mobile, but best on a desk top. No download required on Gamegiraffe.com.WASD - Move. LMB - Shoot. Mouse Wheel - Change weapon. R - Reload. P - Pause. Space - Jump. C - Crouch.