Dunwall City Trials will include 10 challenge maps, with further DLC to come in 2013.
Dishonored will received three DLC packs, beginning in December with the release of the Dunwall City Trials.
Priced £3.99/400 MS Points, Dunwall City Trials will include 10 challenge maps, including an arena battle against waves of enemy AI, a gravity-defying run of drop assassinations, and a race against the clock.
Dunwall City Trials also features a whole new set of achievements and trophies as well as a global online leaderboard for each challenge.
Coming in 2013 will be two further DLC packs, each promising story-driven campaigns. Daud, the leader of a group of supernatural assassins known as The Whalers, will be the focus of the second add-on pack, scheduled for release in early spring 2013.
Details on the third DLC pack will be revealed next year.