Originally posted by Darthvegeta800:

Is the world persistant? If say I play with my g/f and a buddy we all can log into the world seperately to keep playing, occassionally team up à la Conan Exiles or is it more that people join in in someone else's world but can't play in it on their own?

unless you're using dedicated server the host keeps the world. and others join him. when you're in you can do whatever you want. even go in defferent directions and never see each other again.
when you're fighting monsters together they get +40%hp and +4%dmg(or something along those numbers) per player in a certain radius (i think it's set on spawn. not dynamic).