I dont if those are really worth devs time, i just want to help :I
You can smash jump button and climb walls in the upgrade room, then go trough walls! D: and then end a level. ( Its where you can see garbage room behind the window in upgrade room)
So i got a kick (skill), and then made a clone :O and then i kicked my clone on the floor, and then pushed him to the elevator! I was pushing him by just slamming in his body, but he go stuck on that little edge, between elevator and floor, so i tried to chop my clones leg, and i did, we went up to arena! (slicing something from liyng clone makes them shift on the floor for some reason) :O And then I died to archers, respawned already in arena with that new clone, but archers wasnt shooting me! I killed all archers and arena reset, but nobody wasnt attacking me! and then i killed everybody! and arena reset again! but nobody wasnt.... you got the point :I
You can step on a stopped saw and it will send you flying.. well not really flying, but its like higher than your normal jump by 2.5 times.