Playing this game was amazing and I only have one word for it, intense. There’s also a lot of context sensitive moments and if you mess up you can restart the scene. You also find artifacts and search some of them for other information about them. There’s even these optional tombs you can look around at and when your done with it you’ll unlock all the hidden stuff.
You also can search stuff and animals for salvage to modify your weapons. There’s even these camps where you can fast travel and add a skill for three of these skill trees to help you. The multi-player in this I heard is a joke and like it’s slapped on at the last minute. Still I’ll have to try it out one day and it’s also free on Xbox Live recently so give it a chance when you can.