Yeah, The game is great , but I think that in this type of games(Short games for game jams) all we need to do is make a simple game, doesn’t mean that the game will be bad because of that , but , for example , if your game have 30 upgrades (don’t know exactly the number of them) , maybe would’ be better make 15 and improve the feedback of the game, the art, the music etc, I am pretty new to this too and have to learn a lot , but I love when I see people like you , helping other people with your feedback about their games, my English is not so good because I speak Spanish but I hope you understood me ahahah . Good luck in your future projects!!!