You'll get a look at stealth water kills, swimming and a brutal aerial take down.You'll also be able to kill multiple enemies at once with the new bow. This is the new "Guerrilla Combat" system, which gives you many ways to take out your enemies and allows some creativity in how you tackle these situations.
Not a lot of raiding of the tombs, however. There was a brief video of some of the environments, with a few short hints of the non-combat game play.
Rise of the Tomb Raider is coming Nov. 10, 2015.