Not too bad...
First of all, like many people I do not care for stick animation at all.
However, this was not too bad. There was a few things I liked about this. I think you did a awsome job on the explosions, they all looked pretty good. Secondly, the shadows when Kai blast or what ever you call them were charging up. They looked pretty good too.
Over all I think it was better then most stick animation I have seen. Good job man.