It is Battle And Enemies Have Captured Your Base. You Are The Final Soldier From Your Troop In The Base So Solely You Can Battle It Again. Take The Rifle And Get Prepared For The Battle.
Desktop: Arrow Keys Or W,A,S,D To Move The Character. Mouse To Turn The Character, Aim And Shoot. Mobile: Use On-screen Joystick To Move, Fire Button To Shoot, Tap And Drag On Right Side Of The Screen To Aim And Turn The Character.