great game! Felt like a fast paces old-school FPS, on point controls, music and SFX fit well. One thing I'll suggest is adding a V-Sync option on the menu (since you implemented quality settings already should be an easy addition) cause when it is uncapped the framerate fluctuates a lot in some places and that can cause a bit of weirdness/jankness with the mouse movement, and makes the GPU almost take lift as it try to squeeze every single frame it can from the game even when it is not needed. Good job on the little short and fun game.