It would be really nice if it was faster. I don't know if this is caused by the game itself thinking slowly, or if a delibarate pause is built in, but I find the time taken between doing anything really annoying. Other than that, I'm really enjoying it so far.
Christ, that game is just plain sadistic. Why the hell is that bade "Easy"?! It took freaking ages! I invested a massive amount of time, care and effort into beating the whole damn ga-ame, and all I get is five points?! For shame, Kongregate. For shame.
There appears to be a serious glitch in gauntlet mode. After completing the first teir, with the brown leaping robot things, the bottom platform where you respawn simply disappears. The graphic is still there, but you can't stand on it, so you get stuck in an eternal loop of falling. It's a nice game (though it doesn't nearly stand up to NGR) but there are a few big glitches that make it very annoying.