That's a lot of game in 48 hours, good job! I really like the core concept, though the controls were a bit finicky at times. I feel like it's missing some kind of indicator to show you your angle (a vector opposite of where the mouse is from the character), and pushing off was killing too much forward momentum. For example, when rolling down a hill with a lot of speed, I feel like pushing of straight down should still maintain that forward motion and do a large jump, but it seems like pushing of was cancelling any speed you had, throwing you mostly up.
All in all, really solid game!