Beneath the Ashes, the first downloadable episode for Tomb Raider: Underworld, is now available through Xbox Live. The episode adds a new adventure that takes place after the events of Underworld.

In Ashes, Lara Croft explores a massive medieval dungeon hidden underneath Croft Manor. In addition to the new level, Ashes also adds six new costumes for Lara - just in case you're getting sick of her tank top and short-shorts combination (yeah, didn't think so). There's also six new Achievements worth 125G to unlock.

Yep, I said Achievements - the DLC's an Xbox 360 exclusive. It'll cost you 800 Microsoft Points ($10). Another episode, Lara's Shadow, will be released in March.