dude,its a little cool actually but I only vote 4

pretty good

the only thing was that you should make them look more like zombies, one thing you could do is put blood on them or give them wounds, but the idea is good.

Good idea...

I would just make it a little more in depth. The idea is good, but it doesn't feel zombie-like. If it wasn't for the title I would have guessed they were just regular stick men. If you just throw some dismemberment or some guns in there to emphasize that they are zombies that alone I think would improve it. To better show that zombies are dumb, as it said in your flash, for example would be to have the stick man to jump over a wall for cover and the zombies just run into the wall while he shoots them. I just thought I'd throw some pointers in there to help out. I'll be looking for the finished flash in the collab.

Good animation

Now just make it longer!

Dude just wait.

I am in this collab as well and I am wondering why you would post it on NG now... The collab is not for a while and you should not waste it like this, wait for the real thing.