I've been wondering if I should get Dishonored. I love stealth, although I don't know how much the game encourages stealth versus killing sprees. Any opinions?
Nerd³ on Youtube has a pair of videos on Dishonored, showing the same mission (one shown in the previews, where you need to infiltrate a masquerade party, ID a particular noblewoman, and dispose of her) with both pacifist stealth and rampaging, violent methods of completion. Both are perfectly viable, with the violent route (simply charging in and killing everything in your path) taking longer than the pacifist stealth route (sneaking around, knocking people unconscious, and engaging in dialogue) but being more difficult to avoid death. It takes a good player to be a rampaging action movie hero, but you can totally do it and have a fun time with it.
Also, the game makes a note of not only stealth vs. violence, but also pacifism vs. murder. It's possible to have any permutation, so you can be a stealthy killer or a loud showoff who only knocks people unconscious and never lays a finger on anyone unnecessarily.