This game has an awesome concept. Sacrifice abilities stats to gain others. Truely good idea. Loved the visuals and music.
But the movement and the collisions with the ground tiles are unforgiving, imho. I died so often falling down it became frustrating. I think this game suffers from choosing isometric diamonds. The jumps were tough to get right for me. Especially the ones along the x-axis, from tip to tip so to say. And maybe that's because my game uses the same perspective - but I got used to only moving half the speed in the y axis as opposed to x - which is "isometric logic". So I think your game broke my brain after spending too much time testing my own :D
Could be that I am tired already, I'll give it a go tomorrow.