Part 37

Head forward through the jail area and squeeze through a crack in the wall.

Proceed to the stairs; a doorway to the left will slam shut.

As you ascend the stairs, the Void will appear. Run up the stairs, sticking to the inner edge to avoid Juggernauts in the cells.

Continue upwards, going straight ahead when given the option to go right or straight.

Pause in front of guillotine doors to time your movement.

Look for a small cubby on the left, which marks the end of the chase sequence.

Take the elevator in the cubby down.

At the end of the elevator ride, grab the [SHOTGUN] from the shelf and the [FIRST AID KIT] from the cabinet.

Approach the scales on the left and drop the Shank, Badge, and Crime Evidence into one side to open the door to the final boss.

Enter the boss arena to face the Wheelman.

To defeat the Wheelman, you must disable his life support systems.

In each corner of the area is a life support system. You cannot interact with them directly without being hit.

Find the large breathing pump, which acts as an elevator, and ride it up to a tower.

At the tower, use the floodlight to blind the Wheelman.

While the Wheelman is blinded, return to the life support system and press 'X' to unplug the tube. This is the "light trick".

Repeat the "light trick" four times to defeat the Wheelman.

The Wheelman's attacks include summoning debris, smashing his fist, and summoning electricity that can short out floodlights.

In the southeast corner, ride the pump up, check the broken wall for [SHOTGUN SHELLS] x2, then perform the light trick and unplug the tube.

Head to the northeast corner, ride the pump up, and collect [SHOTGUN SHELLS] x2, a [FIRST AID KIT], and a fire axe if desired. Perform the light trick and unplug the tube.

Travel to the east side and make your way counter-clockwise along the outer catwalk.

You will encounter Minions, Screamers, and Wall Spitters attached to wheels of barbwire. Use the shotgun liberally or run.

Be cautious when opening cells, as some contain enemies and one holds a [FIRST AID KIT].

As you cross another bridge, a cage will drop; pass it on the left.

In the northwest corner, head up the air pump, grab a [FIRST AID KIT] from the top, perform the light trick, and unplug the tube.

Head to the southwestern corner, go up, perform the final light trick, and unplug the last tube to defeat the Wheelman.

A cutscene (a non-interactive cinematic the game plays automatically) will play, after which you will regain control of Murphy, beginning the final section of the game.