I got to 3648 after a few tries, I think I bugged out the purple blocks, they would disappear after only getting a third of the way down the screen. The green guys are WAY too difficult to kill without getting hit and in general I think the game is too fast paced. There were a couple of times that I died because I dodged out of the way of the first two enemies to spawn and they reached the bottom of the screen?!?