I like it.
It's quick, it's brutal, and it's funny.
However, some of the deaths tend to repeat themselves, e.g. Yoshi exploding. If you intend to make a sequel, then consider trying to make your deaths a bit more varied. It's funny the first time, alright the second time, but when you see it for the third or fourth time it isn't funny at all.
Anyway, keep up the good work. B)
Black (+)ps