all of the adventures that open up as you play the campaign (meaning they are offered to you planet-to-planet, before the campaign finishes AKA defeat Ghaul) the lore/dialogue changes for example (making this up quick for expression) if you decided to help Saraya *AS SOON* as you contact zavala, right after she gets angry at you for wanting to go to titan, she will be friendly to you on the mission, and talk about how their are still refugees that need our help, and wondering if we will survive if you help her AFTER you defeat Ghaul, she'll be sarcastic about how you take so long, about how we're safe and the enemy is defeated, but there might still be people in the wild that don't know the war is over, ect (this is a speedy example, i don't know if it's the exact dialogue and order, but stuff like that)