Pretty good, but also REALLY friggin easy. After 10 min of play I had the pattern down and cleared 20K, at which point I had to suicide cuz I needed to go do somethin else. =S A little hint for anyone having trouble and/or claiming the superpower is useless: The superpower can destroy the imps which release a bunch of fans that give you a good chunk of your health back. Clear the map and use it to blow the imps whenever you can and you could easily go on forever.
Game gets a little glitchy on me sometimes when I try to use super, tho, and I wound up with poor Yahtzee stuck in his charging animation once or twice unable to move or attack for a good few seconds. Crosshair should probably have been narrowed a bit and the game could have used a bit more variety and ramped up the difficulty more over time cuz I can't exactly say it didn't become bland after a good 5 min but blah.
Outside of the blah bleh and blippity bloo *glitch, quickly got tiring and aiming issue, but maybe that's just me for all of you geniuses that can't read my gibberish =P* I give it a thumbs up for effort and a A- for being one of the better flash games I've ever played.