Awesome work! Remarkable amount of gameplay content for a jam game, super great sense of player choice and progression!
From the credits, seemed like there was supposed to be music? May have been bugged for me, only heard the repetitive swinging sound, which would be my main gripe of the game. That is, if you guys up the visual and audio capability of your team, you will absolutely destroy any jam, I have no doubt.
Other than that, I can't really fault the game at all! Some people have said the swinging is a bit unintuitive to start -- I don't think that's such a bad thing! It gives the game a a Getting Over It kind of learning, a non-fake difficulty where the challenge is a real-life mechanical one, that you actually learn to get better at. It's not gonna be everyone's cup of tea, but I think it's a completely valid approach. Do I think the swinging mechanics could be polished up a touch more? Sure, but that would be more about elevating the feeling of doing it right, not taking away the learning challenge by making it trivial.
Anyway, enough rambling from me. Fantastic stuff, please update post-jam! This has such genuine potential as a game.