Vault 14 aka Abyssal Whip, is a Russian mod created by Austin and translated by Team MIB for inclusion into the MIB88 Megamod, which is now integrated, it is also built into Global mod as a part of Alternative Life.
One of the best features is the Lt. Lou frames in the form of a set of armor for Marcus. This mod adds Vault 14 to the game. Vault 14 was a stronghold for the remnants of the Master's army. Beware: this is no easy location to get through. You'd better be ready for some tough enemies if you enter.