Pretty sweet
I liked how the guy in the beginning came out like an action hero, and ate it immediately. Made me laugh. But hey, I know they were all supposed to be identical mooks, but I had a hard time telling if we were seeing the same guy die and "respawn," or if there were actually just a bunch of helmet dudes dying.
Maybe in your next one, show us in the beginning that there's a lot of these vader helmet guys, so when multiple ones die, it doesn't look like he's "redoing" it. Because at first, I took this like a Counter-Strike parody (and a good one at that). But maybe that's what you were goin for. I don't know.