Dishonored

Improvise and Innovate: Approach each assassination with your own style of play
Use shadow and sound to your advantage to make your way silently through levels unseen by foes, or attack enemies head-on as they respond to your aggressiveness.
Action with Meaning: The world of Dishonored reacts to how you play. Move like a ghost and resist corruption, or show no mercy and leave a path of destruction in your wake. Decide your approach for each mission, and the outcomes will change as a result.
Supernatural Abilities: Combining your suite of supernatural abilities and weapons opens up even more ways to overcome obstacles and eliminate targets. The game's upgrade system allows for the mastery of deadly new abilities and devious gadgets.
A City Unlike Any Other: Enter an original world envisioned by Half-Life 2 art director Viktor Antonov. Arkane and Bethesda bring you a world where industry and mysticism collide, creating an atmosphere thick with intrigue. The world is yours to discover.