It started out fun in OB, then after about ten hours, the combat got really, really boring. I stuck with that character, got him to level 26, with 100 Blade and block, but it was still very boring.
It needs variety.
I usually never play the Stealth type characters, but I found it funner in OB than warrior. But with the level scaling, those fun one hit assassinations turned into Sneaking, hitting, then slashing till either of us was dead. Oh, and lots of potions. I couldn't get out of a melee fight without using two or three health potions on my thief.
I'm hoping that they add more things to the warrior, and more warrior esque factions/quests.