A Weekly Dishonored Q&A on the Bethesda Blog posted Friday offers an outlook on how much gameplay will be found in Dishonored, Arkane's upcoming stealth shooter (thanks VG247). Since it's only three questions, where's the whole shebang:

Q: How does mana work in Dishonored?

A: A small portion of the mana bar regens; just enough to use powers like Blink and Dark Vision, making them basically free. Beyond that, for the expensive powers like Possession or Bend Time, the player must rely on Piero’s Spiritual Remedy (mana potions).

Q: How many different powers will there be?

A: There are six major active powers and four enhancements (passive powers), in addition to weapons and gadgets; plus there are 40 bone charms in the game that grant small supernatural perks. But no one can have all of these things in one playthrough.

Q: How long will the game be?

A: Play-style matters a lot. Very direct players will probably get through the game in 12 or 14 hours. Explorers who eavesdrop a lot will take twice as long.