The game has little info about what it is, it doesn't have music or sounds, it should also have some instructions about how to play and a way to quit, since it's in fullscreen i had to do it with the old alt + f4, the camera should center the player so you know where you are going, the second level after you interact with the door (i think i did with the "E" key, also you can move with awsd), lacks collision wall to the left (you can get out of the screen there), then after that you get a weapon and shoot with the right mouse button and move the weapon with the left mouse button, and as gkc pointed out the hit detection is indeed off, so i just gave out at the second wave because there were just too much enemies, overall the game has potential, i didn't see much use of moving the weapon.