Click on an item to use it, click on the screen or enemies to shoot. WASD to move. Space to zoom in. Last as long as you can before they kill you. They do shoot you if you leave them alive for too long.
All me, except for the gun (which is the Scar assault rifle from Fortnite). Unfortunately, this game is not 3D; however, it the best I could do. If this gets a lot of support then I may make a 3D version in the future.