This is pretty fun and a bit challenging. Nice work!

It's pretty fun. Controls are a tad bit off and I always felt like the enemies spawned right on top of me. But, I can't help but wonder something. When you pause, if you were to try and move left and right, you would point in that direction. Not sure if it's a glitch or if you purposefully put that into the game. Although, if it is a glitch, then it makes fighting much easier.

Controls are a bit off between scenes and it creates a lag.

Besides that, its fun, the graphics are really retro and nicely colored.

Fairly fun, but could definitely use some polishing. For instance, enemies shouldn't be able to shoot you the moment they spawn, some sounds keep playing when there's nothing left to cause them, and it's odd that your gun doesn't start firing as soon as a level starts.