I didn't realize that this was your first jam until I read the description. Even though the game is simple, it looks pretty good!
A minor suggestion I have in addition to what everyone else said was that the characters all kinda felt the same, even though many of them looked different. It would have been a cool narrative addition if the characters had dialogues that changed depending on the character model, although I understand that depending on your timeline and experience, this may not have been realistic to do in 4 days.