I can definitely see the physics being a little too floaty or slippery for this game. The movement code was taken from a different work in progress game of mine and tweaked to fit this Jam, so the movement is more geared towards a more sidescroller platformer rather than a precision one. Unfortunately I didn't want to spend too much time tweaking the movement, so I settled for "good enough" so I could work on the rest with my inexperienced programming skills. I'll definitely keep in mind to make the physics more tighter for precision platformers!
As for the platformer hints, it's certainly one of the bigger criticisms I've received. I really wish I could've fixed that up, but unfortunately I ran out of time. This is definitely one of the first things I'm going to patch up if I do expand on this game!