Thanks for your submission! It was a fun retro experience. I got completion C and completion F.
+ Atmosphere was really good.
+ Audio and main character complimented each other well
+ Level design was good, it progressively added elements and the player is able to learn without being directly told (huge plus in a platformer)
+ Controls were very tight and responsive
- Some of the jumps (specifically where you had to jump straight up from a platform the same size below it) felt a bit frustrating. I think it would feel a lot better with some coyote time.
- Some of the hitboxes felt a bit big (particularly the moving spikes where it seemed a square hitbox was used for the entire triangle allowing the spike to kill you outside of it's graphic element. You may want to consider making the hitboxes a bit smaller than the actual object so the game can "cheat" in favor of the player.