its ok
okay at the start your lighting was really bad, i really couldnt see your persians. maybe you could have gotten a hair light, or even a desk lamp and used that to make the scene just that bit brighter.
next is the quality... im not sure if it was because you had a bad camera, or if it was the compressing of the movie that made it a bit lacking in detail. next time maybe you could try submitting it in two submissions or something (thats if you make another one).
as Sifr said you models weren't very detailed and could use a bit more work, as well as some of the weapons they were using (the axe was good though).
the scenery or setting you used didnt fit the story i thought. i think it would have been better if you did it agains a plain white background and used a program like photoshop to put a background in later (thats if you have the time to do that).
another thing was your actuall animating of the clay... it wasnt very smooth to me, and at times it looked a bit jumpy. maybe you should try taking more photo's and having smaller amounts of movenment per slide. sure it will take more time and more effort will need to be put into a peice, but it will be worth it in the end im sure.
anyways besides all this it is an okay claymation and im sure in the future you will produce better and better animations :)