You've got a really ambitious project here! I like the idea and the game illustrates that really well. However I feel like the scope might have been too much for a 4 day game jam which led to certain systems and mechanics to be unfinished in my opinion. I feel like the game is not really clear on telling you where to go or what to do. You could work on that by adding more visual cues, a missions log or even giving hints in game. Right now, at the start you kinda have to guess what you have to do and I was kinda lost for a few minutes. I would suggest to add enemies that match the attack you unlock (for example, unlocking fire from a fire enemy instead of a skeleton). I think those relations you make would really help identifying what you have to kill to gain certain moves.
I would also love to use the mouse normally instead of having to press Q and E to rotate the camera or having to "drag" with the mouse. The battle can sometimes be a little bit clunky. The lighting ball, for example was kinda hard to get used to as it apparently has a timer that destroys it midway if you don't shoot it right away. I wasn't understanding this at first and I couldn't hit my enemies because the ball would destroy itself. I suggest you also use some visual cues to let the player know what enemy he has selected, for example, as it can also be quite hard to see which enemy you are currently aiming at. Also, the mushroom minigame is a bit too difficult to avoid sometimes since the cat's movement is too slow for certain mushrooms that come your way making it almost impossible to avoid some of them. However, the rest seems to by great in my opinion and it's incredible how you still managed to build something of this scale in this time frame! Good work on making this idea a reality despite the huge challenge it is!
I can clearly see an inspiration from pokemon games here. Not only the fact that it's a turnbased game but also the whole "learn a new move to proceed for the next zone" mechanic which I really appreciate! However, the game could use a little bit more story behind this whole theme as most of it seems like it's just there. That would greatly improve the games personality in my opinion. I love some characters design as well, mainly the cat! I can also see some inspirations from pokemon here in some of them.
I also feel like the theme of death lacks some "justification" here with also a little background. Forgive me if I missed it because I couldn't finish the game :( but a narrative here would explain what's going on a little bit better. Right now, it feels like the death mechanic was kinda forced into the game. But it still works! Just kinda adding some ideas to make it look better :)
Visually the game looks good, I kinda like the cartoony graphics and it reminds me of some PlayStation 2 games (Ratchet and Clank, for example) which is really great and nostalgic! The animations are cool and UI works as intended, however, as I mentioned before, I feel like the game kinda lacks some visual feedback sometimes.
Overall, you've got a really ambitious project here! As I usually say with a lot of games here, don't see these above things as negative things but as improvements and ideas for the future of this amazing project you got here! I just feel like the scope might have been a little bit too big for just a few days but you could still manage to make something interesting which is awesome and impressive! Congratulations on your submission and I hope you keep developing this!