Nails the retro feel. I enjoy the art and music as well. The end of level animation puts a big smile on my face :D

I think the movement would feel better slightly slower and with more momentum, similar to Super Mario. The enemy spawn rate (or just number of enemies) and movement speed are a bit overwhelming.

Overall I liked it, well done!

The tone and the level design is really great. It is great to play even if there's only few mechanics. The complaint I have is some hitboxes covering way too much ground and some umpredictable actions by the enemies that can be uncovered only by trial and error. Other then this minor things I would love a more fleshed out level design around this! More intricate levels with different enemies and secrets. The way enemies came at me reminded me of a shoot em up and enjoyed this somewhat mix beetwen two very different genre!

This did a good job of capturing the retro feel and look. The sprite art felt very well done.

I had a bit of trouble with the enemy hit/hurt boxes. Sometimes we both took damage, sometimes something that looked like a hit just hurt me, and sometimes I would run straight into some of them and they'd get hurt. It was also very hard to tell when some enemies were planning to jump, leading to a bit of frustration. The enemies felt a little inconsistent, but other than that, good entry!