Good art, fitting music, sound effects, starting tutorial even a intro sequence! Nice to se all the small details come together. Im however not a big fan of the game-play. The platforming felt a bit sluggish, there where some close to "leap-of-faith" like jumps. The action itself also felt way to slow for what the game is suggesting, I wanted to hammer more things while moving around and being more "bad-ass", that the character had to stand still to hit stuff did not help. The coin gain is also way to slow, even in your trailer it takes you almost 5min before you can get one, and in a game as smal as a gamejam game, it just did not feel justified.
Overall a good gamejam creation.