All missions can be played with a minimum amount of aggression and make this fun anyway, you do not like in Dishonored sometimes feel that a miss half the game.
In addition, SC: B perhaps first game in the me a scoring system in single player not annoying, but instead really motivated because it beloht not play style excessively but successful actions generally rewarded.
The story is indeed incredibly cliched, but still tells gripping, they lived up to their purpose and does not stand out negatively.
Technically the game is not a milestone, but at least I had at no point feel that better graphics or the like the feel or the much-touted immersion would have improved. The performance on a one 560Ti and an i5 2500K is absolutely perfect, the game is running on the highest settings (FullHD, no SSAA) perfect.
For me as Einzelspielerfan the co-op is a nice little bonus, I've played with a friend and has worked very well after a few teething problems, you could really plan and execute some nice team action.
For me to SC: Conviction definitely a step in the right direction and a worthy continuation of the series.