Tomb Raider is continuing what seems to be the trend in 2012 action games: bow and arrow combat. Lara Croft's particular bow weapon is extremely powerful and even comes with an intimidating clanging sound when she lands a headshot. Not sure what is clanging with what when her arrows hit but it's consistent and the bad guys really seem to have a problem with it.
The involved story line in the new Tomb Raider is probably going to be where this particular story hangs its hat. If the old PSX games were strong enough to generate two movies, then a successfully re-imagined Tomb Raider franchise has a chance to do even more. Check this video from the Xbox 360 Press Briefing and you'll see what we mean.