Really novel idea. The idea of doing the same thing again, but harder is nothing new, but I have never seen it flavoured in such a way and I love it. I can see this being fleshed out enough to be a small boss rush styled game. Minor complaints would be as a leftie, who uses mouse in left and IJKL instead of WASD, the controls were not that accessible to me, but that can be overlooked in the context of a jam game and some of the abilities either did not feel they had much impact (looking at the air jumps, although maybe cause I didn't have them for later attack patterns) or were unclear exactly what they do, -1 sword and -2 jumps could use a rewording to say "You still have a melee attack/a ground jump."