Game description: This is the last battle of the fourth, shooting a very classic type of game, pick up your weapons quickly lead you to destroy the enemy forces now! Operations Guide: NEW game click to start the game entered the game, and then choose to enter the era of the map click on play, selecting weapons according to the lower right corner of the play after entering the game, WASD keys to control direction of movement , mouse-fire , F key to throwing a grenade , E key to switch allies , the space bar to kill their own allies , R button for a bullet , G keys thrown away firearms !