More than descent.
There isn't that much good madness movies on the theme so long and this one is quite good.
On the good side:
-animation is fluid
-quite good "plot" and timing
On the other side:
-some really weird color of blood
-whole animation seems kinda slow for a madness movie
-names like Nikolov and Kolav doesn't exist (i'm russian myself and there isn't any name like that), it rather should be Nikolai and Kolya, though those names are pretty much the same (Kolya is just more friendly way to say it)
-over usage of a word comrade, it would be more correct to use something like brother, friend and etc.
Good luck with thurther works.