Alright, here's my feedback on your game:
- Great retro art, music and sfx's.
- It wasn't mentioned under the controls that you can dash with space.
- There should really just be an (invisible) checkpoint at the start of every frame/room. This is too difficult for just the introduction rooms.
- I was able to dash into the wall (stuck) in the room where you introduce the enemies that shoot three fire balls.
- The enemies that move around in half circles are just too difficult.