I wish there were other unlockables besides concept art (another problem shared with the console games), but at the end of the day, Tomb Raider: Underworld on the DS is a great game that any DS owner would be silly not to at least try.
Nice face, shame about the legs. Despite some great locations and visuals Underworld's gameplay will feel a bit on the bland side for regular pocket gamers - the more casual crowd should love it, though.
Tomb Raider Underworld is way a too easy ride on NDS, and a scrappy narration won't please Lara's fans; gameplay gets boring soon enough, and main characters portrayal isn't deep enough. Just for Tomb Raider's die-hard fans.