I thought you said you had better stuff?
I can't say this is good or not bad. You gave us 1/2 of a second to work with. Please make longer animations...
The one at the bottom had a weird reaction, his back bent but he got hit in the face :p. The punch wasn't bad but it was weird how he jumped to do it, its more like he jumped up than forwards to actually punch. But then again you posted a lazy one so I guess...
Make longer animations man, It's pretty hard, borderline impossible, to cnc these INCREDIBLY short animations. Most of these don't even have full movements what the fuck.
As far as your combo animation, you need to consider balance because he looks like he's gonna fall during the whole thing.