A puzzle platformer without jumping and well done. Nice! I'm not sure if it was intentional or not, but sometimes the player bounces up slightly and that added a bit of character to it, I enjoyed that.
Viewing post in No Jumping. Take the Fall. jam comments
You may already have figured out what the issue was but since it's a gamejam and we're all trying hopefully helping and learning, you may want to check that the colliders are not overlapping, add a PhysicsMaterial2D with friction set to be a little lower, and possibly freeze Z rotation on your character to fix the collider issue (though if it doesn't break gameplay elsewhere, I'd keep it in, it adds flavor).