Nice entry. The concept is very cool!
Just a couple thoughts/observations
- The CRT aesthetic works great for stationary games like yours, but in other games that require movement in a 3D environment it can give me a bit of motion sickness (That has nothing do with your game, just needed to vent after playing so many of them XD).
- Enemy can spawn at the very edge of the screen on Level 5. There’s no way to shoot them.
- I think the levels should be designed with a maximum of 2 controls. Any more than that is a bit too overwhelming for me.