This is actually a really complex and well-done game that I feel like makes it harder on itself than it should by not having an introductory tutorial. I know it's hard time-wise but in a game like this a tutorial is absolutely vital! So it took me a bit to figure out the mechanics and controls, but once I did damn! There is so much in the game! The peak looks amazing from a pixel art design perspective, there is an AI behaviour in a jam game?!
I agree with the others that the music really gets on your nerves after a while (especially for me who spent a lot of time figuring the game out xD), but it's a jam and it's fine. Better than nothing.
So kudos, it's a great game, but in the future I would definitely recommend adding an interactive tutorial.