That was fun! I think I completed the game at 337.8, right? I was using the "burst to the mouse but sometimes not" and the grappling hook as a combination, negating the bad bursts with the grappling hook. If there are more of these combinations, then the game is really great.
My only nitpick is that the player isn't "forced" to take some blocks, so I personally never really used the blocks I didn't select. But I think this is quite subjective, and maybe you like the game better this way. Anyways, great game.