In the game, players can hold one primary weapon which each has its own secondary, along with a combat knife, grenades and other picked up explosives and devices. Players start with 100 health, which is reduced by damage. Wounded players heal by using the LIFE-2 auto-injector. The environment is almost entirely destructible, but bullets cannot go through most walls. The ammunition system uses a bullet calculator, shown on the HUD, and players can endlessly repair vehicles with power tools unless they are completely destroyed.