I don't know if this was a bug or my plugin being incompetence but sometimes, when I click a square, instead of choosing it the game choose the square next to it. Then I click at another square and it decide to cancel it. This happen constantly, but maybe it just because my laptop is very old. Also, would you consider changing the beeping sound in the rotating section into a softer sound? It kinda hurt my ears having to click constantly because of the bug making the game kinda frustrating. The rest of the game is very enjoyable. I really dig the patterns.
So... if you jump and attack (mid-air-slash) you will always move forward a certain distance with a certain speed, even if you are slowed down by ice or weight. I think you shouldn't be able to jump at all. Maybe Arcuz 3?