Good work mate. Some feedback:
- add main menu (makes the game feel more finished)
- add pause menu (so that players have it easier to quit game/ change settings)
- add sensitivity settings (I found sensitivity way too high)
- add diagonal movement (feels weird to be able to move just in 4 directions)
- add actual pathfinding to enemies (they can get stuck in the walls and you have to find them which can be annoying)