Watch as Galahad and Igraine ride the elevator up. On the second floor, they sneak behind a railing just outside the Tennyson’s Dining Rooms; Galahad ends up directly behind an unsuspecting escapee (33). When directed, execute a melee attack by pressing 
to incapacitate the enemy. Meanwhile, Igraine conducts her own melee takedown.
Clear the 2nd Floor East Wing
Take cover quickly, move around the wall (34), and start gunning down armed bedlamites. Fight across the Tennyson Dining Hall (35), moving from cover to cover. When the room is clear, follow Igraine to the next door (36) and bash it open to find more gunmen in a billiards room.
Here’s your introduction to Blacksight, a powerful Knight’s ability that slows down the world while letting you auto-target and shoot at full speed. The aiming reticle auto-centers on the closest target, so pull 
to fire immediately. When the reticle turns red, the targeted foe is taken out. Quickly push the right stick toward the next target. Again, the aiming reticle auto-locks onto the target, so open fire immediately.
Next, the game invites you to toggle on Blacksight mode yourself, the way you’ll use it for the rest of the story. Your Blacksight meter is the bar beneath your weapon info at the bottom right of the screen. The white segment of the bar shows how much Blacksight time is left; when empty or unavailable, the meter’s bar is gray. (Note that Blacksight cannot be activated if the meter hasn’t filled past the hashed area at the left of the bar.)
Press 
to activate Blacksight; the meter starts emptying from right to left. Start eliminating targets immediately! Don’t waste valuable Blacksight time. Keep shooting and toggling to new targets until the meter runs out. If you clear the room before the meter runs out, you can press again to deactivate Blacksight.