You are elite space marine and your mission is to infiltrate martian bio weapon research facility and use your powerful assault rifle to shoot ..

You are elite space marine and your mission is to infiltrate martian bio weapon research facility and use your powerful assault rifle to shoot thousands of security guards, try not overheating your weapon to keep your accuracy in order to survive all waves of enemies.WASD - Move LMB - Shoot R - Reload P - Pause Space - Jump