Dishonored puts you in the shoes of a bodyguard, namely the bodyguard to the Empress of a city called Dunwall. Your name is Corvo, and although you’ve spent your life protecting people, you’re suddenly thrown into the dirty work of assassination. Very soon after this, you’re introduced to a mysterious being known as "The Outsider." He seems to have taken a sudden interest in Corvo, and bestows powers upon him in a dream.
There’s an old world whaling and sailing theme to the game, though it seems to stay on the periphery. It’s a bit like having a game where all the books you read are about horses, and you inhabit a town with an economy based on horses, and horses are just running around, but you never get to ride a horse. But that’s really just an observation, rather than a knock to the game. The books and the side conversations and the secrets of the inhabitants of Dishonored all tie loosely together. The "story" of the game isn’t necessarily one single narrative, but a pieced together myriad of clues. You’re just sort of thrown in, left to figure out what it all means for yourself. This could drive some players crazy, but it’s also something that can keep you coming back for more. The fact that one of the first items you get in the game is a heart that tells you secrets when you point it at objects speaks volumes about the way the game encourages you to investigate.
The story is not laid out for you at first, but actually, that’s part of the the appeal of the game. You can easily play the game as a killer, and Corvo is very good at this. But if you look for alternate ways to reach your goals, like sneaking around or otherwise avoiding outright violence, you will learn more about the story and Corvo’s motivations. You’ll be rewarded with more venues and things to do.
You can learn new powers, many powered by a mysterious dark magic, and you can buy new equipment to make your life easier. Bone Charms that enhance various abilities and occurrences in the game can also be found and equipped. You can enhance pretty much anything, but with the open world design of the game, you’re not really pinned down at any one point in the game to a certain skill set. You can easily spend your time looking for more runes or coin to enhance your powers or equipment, instead of focusing on your current mission objectives, if you wish.