Use the WASD keys to move and turn and the arrows to strafe. Press the F key to fire your M4A1 Rifle. You can press R to reload, but it reloads automatically when you run out. Your enemies are the men holding AK-47's. They do not know how to use tham, so they attack with their melee weapons. Your enemies have placed one decoy in the map. It will not move to attack you, and cannot be destroyed. it was placed there to confuse you and waste your ammo.
I used the raycaster from Cat horror game, which is a remix of a raycaster my brother made using a griffpatch tutorial. If you remix, you can customize the M4A1 rifle with the included gear.
