Nice, the art style works well and I enjoyed the theming.
Some thoughts:
- I think some of the sfx could be a little more stylised to match with the graphics of the game. The jump sound in particular feels a little out of place compared to the item pickup.
- The hook is an interesting mechanic, but feels a little clunky here. I think it mostly became a wall jump for me. Could be that since I'm playing on a keyboard it's just a little awkward. But I'm also not the greatest at 2D platformers, so I'm sure some people would have an easier time with it.
Great job!