Okay, DA2 defeated.
Things I did "wrong:"
-let Isabela leave me for a goddamn book
-accidentally enraged Fenris to the point where one of us had to die (it wasn't me)
-trusted Anders enough to assume he really wanted to be separated from Justice/Vengeance (instead he blew up the church in the coolest sequence ever and started the biggest war)
-killed a whole lot of people
-made several deals with demons for the sake of permanent stat boosts and extra skill points
-cheated and slaughtered those same demons
-accidentally murdered a few whores
-accidentally started a crime ring (???)
-assassinated a French noble with Felicia Day
-killed a few Grey Wardens
-murdered Keeper Marethari to destroy a demon (I liked her. D: She was smart and nice and I even knew her from the first game. D: )
Things I did "right:"
-slapped Knight-Commander Meredith upside the face (with a sword)
-saved a whole lot of people
-murdered the thousand-year-old sealed-evil-in-a-can
-stabbed First Enchanter Orsino many times in his (then-mutated) face
-murdered lots of criminals
-saved the city like a thousand times
-destroyed a few ridiculously powerful demons
-did the romance thing (Varric: "If you're looking to sacrifice Hawke, that's fine. I just gotta warn you, he's no virgin.")
-happily solved a b***h-ton of puzzles that are supposed to be hard (time-consuming, maybe, but not hard)
-saved Zevran (who for some weird reason showed up in the final fight? XD )