I found the physics to be interesting, it worked differently from the other ball platformers I know and I actually had fun trying to figure out how to get over the obstacles. :)
Some problems I encountered:
- The sword and shield, I'm not sure what their are supposed to do but they don't seem to work: When being attacked, the sword goes through the shield and I somehow managed to lose the shield and can't pick it up again. (Also I think the shield should always stay vertical or controllable using A+D?)
- I don't think we should die if we leave the screen at the top : if I jump near the top, instead of falling back down, I die .
I wonder... maybe only platforms & obstacles, without the weapons, would have been enough? That, with the challenge that we must use up 100% slim?
Anyway nice try to an original idea and the graphics are cute - I feel there's potential. keep it up! :)