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"The story will differentiate it from other action titles, according to game director Dana Jan."
New Gameplay Details:
Adding a touch of variety to the shooting is a slow-motion mechanic called Black Sight, which ties into the Black Water, a substance the knights drink to heighten their senses and restore health. (Mallory drinks some from a vial after he's shot in the neck.)
During Black Sight you can flick the thumb stick to quickly target enemies faster than they can react. You can't use it all of the time - you build up a meter as you kill enemies - and perhaps you wouldn't want to use it all of the time even if you could, because Ready at Dawn teases that the Black Water makes the knights less human somehow.