Description: Go through 12 new missions in 3 campaigns from past and future battles in this game. Each mission is a set of 3 maps. Use W A S D keys to move. Use mouse to aim and shoot. Press R key to reload. Press Space to make Your assistant attack. Press G to drop gun, F to throw grenade. Press Shift to avoid enemy fire. Press E to switch allies and Q to command an ally to move to pointer position.