Indie tower defense/RPG Dungeon Defenders is getting some AAA talent. This DLC pack adds portal guns and Team Fortress familiars to the zany action for the upcoming PC release.

The Huntress gets access to Aperture Science's signature device, which generates paired portals that transmit heroes, projectiles, and enemies instantly between them like you'd expect.

Four Team Fortress familiars are available to all Dungeon Defenders, including turret-repairing Engineers, flame-throwing Pyros, ally-healing Medics, and bullet-spewing Heavies.

Why would you not want this free DLC pack? Mostly if you don't want to pick up Dungeon Defenders on Steam, since it's a bonus specifically for Valve's digital storefront.

Dungeon Defenders launches on PC, Xbox Live Arcade, and PlayStation Network on October 19.