The bosses are cool! I like that you got each to attack in different patterns. The music is cool and varied, and goes well with the graphics style. I also liked that when I got skills, the game also returned me to where I needed to use them, I think this is good level design.
The combat was simple and felt on point, a lot with the classic theme.
Even with the retro style, it was very easy to know where I was in the map, and the map was short enough that the walk felt "cinematic" rather than annoying. I liked this game.