I'd probably fit most as a Killer then an Explorer. If I find a competitive multiplayer game I like, I'm going to play to win. Out of my way casual scum, tryhard coming through.
If it isn't a multiplayer game though I'm either interested in gobbling up all the juicy bits of storyline, especially in game like Dark Souls or just getting good at the mechanics of the game. I don't play games to relax in the normal sense of the word, really. If the game's storyline isn't all that interesting or central, like in Dead Space, I'm going to crank up the difficulty to maximum and if I'm in the right mood, play like my life depends on it - like just see how well I can possibly do if I concentrate.
Edit: if you're a socializer and play TF2 and you're trading and talking in the middle of a critical moment that costs the team the match, I'd personally like to take this moment to say that you're the scum of the Earth that's ruining video games since 2010.