The upcoming Xbox 360 Tomb Raider: Underworld DLC, Lara's Shadow, will allow you "to play as an entirely new character for the first time in the history of the Tomb Raider franchise".
Well, sort of. You'll get to step into the shoes of the Doppleganger, a clone of Lara Croft who commands "superior shadow powers, increased agility" and the "ability to slow time to unleash devastating melee combos".
We'd have more info if the developer diary movie Eidos released didn't appear to be broken, - we'll update the story with the movie as soon as we get a working version.
Lara's Shadow is the second Xbox 360-exclusive DLC pack and is due to launch on March 10 as a 1.07GB download via Xbox Live.