Battle Royale Survival is a first persona arena game. You're stranded all alone in an arena filled with vicious killers who are armed to the teeth. All you have are your wits, your reflex, a baseball bat, and like three different kinds of guns.
Use your mouse to click on and through the various in-game menus. W,A,S,D or Arrow Pad to move your character.
Mouse to aim. Left mouse button to fire.
The scroll wheel will let you select a weapon.