Eidos has announced that the first of the two Xbox 360-exclusive downloadable levels for Tomb Raider: Underworld, originally expected last month during the holidays, will finally be released on Xbox Live Marketplace on February 10.

Dubbed “Beneath the Ashes”, the pack will see the story pick up right after the main game, with Lara Croft exploring caverns underneath her ruined estate. The pack will include six new costumes and 125 gamerpoints worth of achievements.

The second pack – “Lara’s Shadow” – will be released on March 10, bringing a new playable character to the game.

Price for the packs is yet to be revealed, though GameStop will be selling a $20 bundle with tokens for each episode, suggesting each episode to be worth 800 Microsoft points ($10).