An epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet's surface, to a subterranean lava-flooded mining facility.
This addon replaces sounds for Autogun, Minigun, Rifle, Prototype Rifle, Flamer, PDW, Tesla.
You need to delete the previous version (ultimate_sounds.vpk) for this one to work correctly.