Surprisingly GOOD!
I don't usually dig into the "mindless gore" kind of animations (a sort of "genre" that is particularly popular in flash animation i guess), but there's something about this one that certainly makes it different!
I guess it may come from how you experiment with an endless variety of death sequences which adds a lot to the fun and absurdity of the flash, and how everything is well timed and polished on its frame-by-frame form.
I think there's room for improvement on the character animation though; sometimes the tweened look a little 'mechanic' , something that takes some extra time, but may be worth the effort.
Keep it up!