a mod a search

[UchihaSasuke]

another question, quick after another... but this one is more stupid and difficult... hope someone can help me

About a year ago, i saw a mod, it looked so great, but i didn't have a xbox. I still dont have one, but my cousin no have a modded one. So that means i can play mods on it. But the fact is, i can't find that mod back. what is saw from the mod:

It was with COVENANTS VS BRUTES
The player is the covenants, with a lot ai friends, Hunters and Ultra's, white elites... Adn i remember there were VERY BIG NUMBERS... I FORgot the rest... hope someone can help me