It wasn't much but the use of theme was interesting.
Well done on using Java, most wouldn't be able to or even think about making a jam game from scratch.
There was a way to wall jump. I'm not sure if that's a bug or not but I used it because it seemed like the only way to progress sometimes.
I think if this idea is explored further it would be cool if the level was completable with any combination of lost power-ups. It might be a headache design wise but I think it would be a cool kind of "create-your-own-puzzle" sort of thing. It could be easier or harder depending on what you picked.