I'm a solo player with a case of altitis. I do missions, focusing on story arcs, trying to do internal roleplaying as much as I can. No powerleveling, no farming. For some characters, I might occasionally turn off XP gain to get more missions in. I'm not interested in playing a character after hitting 50, outside of finishing up story arcs. I'm also an explorer type, so I like to go after badges, as long as they're not too much of a problem. (I'm not obsessive compulsive, so I don't mind missing a lot of badges.)