https://www.youtube.com/watch?v=4I0WOvvfLqM
At 03:55 you can see the Atributes tree in which you can level up certain stats of Talion like health, capacity, focus or damage increase in certain weapons which use so called "Myrian", which is a resource to acquire these stat boosts. You get Myrian by destroying the runes you don't need or by finding artifacts around Mordor. Also at the beginning there is some nice looking building and what looks like an arena of some sort.
Does anyone know what is the third category for ? There is Abilities / Atributes and what's the third ?