I think the controls are a bit too unintuitive for the game's own good. Something about using the "Q" "A" and "Z" keys doesn't really click with me (and I suspect that goes with a lot of people), I found that shifting the rotation keys over by just one (WE/SD/XC) actually helped me find the arm controls better suited for my organic mushy head. While the default keyboard mapping doesn't click with me or a lot of players, the ability to change it makes up for that shortcoming.
Maybe some of the frustration with the controls comes from how fragile that white sphere is with every surface it touches, having it break instantly when it touches an otherwise innocuous platform feels cheap and not entirely my fault at all.
A smaller nitpick, but it would be better if pressing "esc" twice took me out of the level instead of having to press two keys.
The game is well made in all other respects, however. It's a cool game, great job.