Great game! It feels a little slow to do parkour though. A diverse moveset would be nice. And it's fun to flip and roll through an upside down J or L, but I don't like getting crushed every time my foot gets stuck in a square place. You should make a smaller "head" hitbox on the top and just push me away from a block I barely touch.
EDIT: Another glitch is me clipping into the bottom of a block then dying when trying to jump. You should check for collision during flip and roll.