"This is the first real game jam I participated in". Well, for a first jam game I have to say this is outstanding! A very good exploration of the theme of the jam, and the game looks very polished with a whole set of abilities to use, a large world to explore and its own signature comics-inspired artstyle.
The level design is awesome and even if I stopped before I could get any cheese, I really enjoyed hunting for all those hard-to-reach coins. I don't know how big the world actually is but if it's not so big, maybe make the first piece of cheese obtainable sooner. It felt inconsistent having half of the abilities unlocked and no piece of cheese out of five.
The original voiceover is a feature rarely seen in this type of games, it shows lots of effort put in, and if it wasn't for an audio glitch that made the sound break down and distort for me, I would have played this for much longer!