Music was good and the game is a classic shooter game but with the waves spawning and all those particles which definitely make it chaotic, art is simple but not bad at all. My suggestion is… improve the aiming, it is extremely uncomfortable right now as 1) you are aiming with something which pivots above the player instead of of around the player 2) bullets only shoot out when clicking not when holding the left mouse button. And finally the most frustrating of all 3) The arrow which shoots is rotated 90 degrees to the right of the mouse cursor which makes aiming a bit weird, you can easily fix this by subtracting 90 degrees from the rotation of the arrow I believe (or in radians by subtracting PI/2).