Not bad, but different object styles are a bad idea. If you use free assets, but look for the most suitable ones, at least in one pixel ratio: 32x32 or 16x16

All it said for me is that you only had time for 1 level and nothing else happened, both on web and download

Nice job for your first game jam! I think the mix of holes and enemies was well balanced, and having a forward as well as a down attack was good forward thinking!

Adding some SFX to things like jumping, landing, and attacking will add a lot to the experience. You could also experiment with making jump height dependent on how long you hold down the jump button!

Congrats on your first game jam! The fact that you finished and submitted a game is impressive in itself.

Pros:

- The interface works well

- There aren't any game breaking bugs

In terms of improvements, I think a small few changes would go a long way. Adding a SFX will GREATLY improve the feel of your game. I found that I thought I would have to jump up on the crates or avoid obstacles on the ceiling, but they were passthrough. You could utilise that. The enemy hitbox should be a little bigger too, it was a bit infuriating.

Overall, I like the idea and it is very well done for your first game.