As for non-violent gameplay, there's plenty of it:
Our game and its economy are heavily trade skill oriented. Our crafting system is very complex and has a high degree of customization. Moreover crafted equipment is the top of the line. If you never wanted to pick up a gun, it's completely possible for you to just go out and harvest, or buy resources from other players and then do your crafting. I think most players will also do a little fighting, if for no other reason than mobs will jump you while your out harvesting.Check out the full interview at Werit's Blog.
But crafting advancement is not coupled in any way with combat advancement. There are other non-combat skills, as well. Things like the entertainment line which provides long-term buffs for players. Taming mobs to be trained as mounts and sold to other players. Diplomatic skills. Different players enjoy doing different types of things. And we've tried to cater to many playing styles, rather than forcing players down a combat oriented path.