North Wing

Follow the Little Sister through the Central Atrium and onward into the North Wing. Try to keep ahead of her and continue to hack the Security Cameras and Turrets, since the Spider Splicers in this area are hard to see against the darkened ceiling. If you have a lull in the action, try setting up a perimeter defense to better protect the Little Sister. String up a couple Trap Bolts or Proximity Mines to minimize the number of attackers you’ll have to face at once.

The Little Sister leads you back through the upper balcony of the Central Atrium and to the exit.

Safe

Contents: 12 Liquid Nitrogen, 8 Electric Buck, 5 Incendiary Bolts

Before following the Little Sister to the exit, head around the corner on the balcony and search the short corridor beyond the bronze gate. There is a safe in the corner of this otherwise vacant passageway.

Objective 2: Get the Adam Harvesting Tool You will need the Adam Harvesting Tool that the Little Sister gave you to defeat Fontaine. Take it.

The Little Sister has returned to the ventilation hole up the steps but she has something for you. Take the Adam Harvesting Tool she’s holding out for you—you’ll need it to kill Fontaine.

Objective 3: Take the Elevator to Confront Fontaine! The elevator at the end of the Proving Grounds takes you to Fontaine. Be prepared before you leave, since there is no way to return from this fight!