a very good animation, tho i might add a few errors here and there:
-the heavy-man's face was too simple, if you we compare it to the medic's super-detailed awesome face.
was that planned to happen? to show us that heavies are brutes, and therefore they have simple/bland faces?
if so, good call.
-an other mistake was that this didnt have any play/replay button, or a preloader.
this looped, and a loop doesnt look like a good movie, even if IT IS a good movie! (and your movie IS a v. good movie.... really)
so, all in all, if you added a play/replay button, if you also added more scenes, or a final punchline (even for a short movie like this), and a solid ending/preloader, this would be so much better.
other than that, it was awesome. you did a good job.
keep making stuff like this, you have the skills.