I got stuck in the part where you have to get over a high step and there are two teleports (one before the step, one in the ceiling) and the red stuff you can't touch spanning from top to almost bottom, leaving you just a tight space to get through. It's a nice idea, learning to use the sling takes some time, though. A real test of skill.
I'd like to invite this game to our game-making contest, we also have a class for jam entries.