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.
Next generation of Alien Swarm map. Swarm is alive!
This map is extremely complex, quite short, but hard also. Enjoy and reach the Forbidden Outpost!
To enable custom particles use this file Moddb.com, also read comments there (update old version of absolute madness if exists)
Many effects so requires rather good pc, and maybe laggy a little in some areas, but remember this is still beta version.
minor balance changes
minor visual changes (fog changes, less annoying special water, more accurate alpha on some diplacements, bad lighting one some model, etc)
some perfomance optimisations and glitch fixes (ai pathfinding, bad collisions, vscripts api fountains precache and more)
other minor stuff