This is a neat idea: That's why it hurts me to say this . . .
The movement, interactions and the shooting are very janky. When you shoot (in my case I hold down the mouse button. Not sure if there's any difference between me just pressing it once or pressing it rapidly instead), your character starts sliding backwards, because of what I can only assume to be recoil, intended recoil or not. There really should be no recoil, intended or otherwise, it makes aiming, shooting and moving very difficult
Also the music is just ear-poison. Sorry . . .