Your third animation... is... pretty good...
Just that in the final bit, when the blue guy slides backwards, it appears slightly odd, and drawing just about four more frames for that would have fixed that.
The combo was good, at least what I could see of it with those smexeh effects getting in the way. It flowed pretty well, but just seemed to lack enough force. I can't seem to pinpoint a reason for that.
Effects are great, and I don't see how you can improve on that because i'm a lazy piece of shit who doesn't use effects at all.