Part 23

Explore the area south of your current location. You will find a corpse pile with three enemies. Use smoke bombs (a consumable item that creates a temporary cloud of smoke) when they run around to make them drop their fire bombs and kill themselves.

Loot the area for Nails, Gunpowder, and Weapon Parts x35. Break open the numerous boxes for additional random parts.

Head to "The Devil's Taproom". To the left, you'll find an Herb. Inside, you can find 2 Bottles and the file "The Barkeep's Journal" (File 25/40) in the upper right corner. Behind the bar, you can find Smoke Powder.

Go to the backroom. Before interacting with the art on the wall, collect the Fuse and Nails from the cabinet to the left.

Attempt to destroy the art to be pulled into the "Art World".

After Sebastian gets his bearings, you will be pulled out of the room. Head to the back and take the "Small Room Key". This will change the room, revealing a body with Handgun Bullet x4 and a Smoke Bolt.

You will now face two rooms with patrolling enemies. Use the numerous boxes for cover (a defensive position behind an object) to kill the two enemies in the first room.

Cross the hallway and use the boxes to kill the three enemies in the second room. The furthest enemy is eating a corpse and will move in a short pattern when you approach; use a smoke bomb or a trap to defeat them.

Use the Small Room Key to access the "art". A ton of trip wires will appear. Go counter-clockwise, follow the wall, and then follow the ropes to your left to reach the art from behind and destroy it, removing one of the two locks to the theater. You will then exit back into Union.

Head west from the tap room to an intersection. Check the cop on the northwest corner for Handgun Bullet x5. Being near this enclosed parking space will trigger an event.

Follow the monsters west to a fence and open it. A "Mobius Operative" (an allied NPC (non-player character — anyone the game controls, not you)) is by a semi-truck and is about to be swarmed. You must rescue him.

Sneak up and kill the monster in the back. Use bolts (special ammunition types) and your shotgun to kill the remaining enemies in the first wave. Consider using an explosive bolt if they group up.

A second group of monsters will arrive from the southeast. Use explosive bolts here to kill the bulk of these reinforcements. If needed, kick over the two red barrels on the west side of the area and shoot them to kill multiple enemies.

After clearing the enemies, loot the area. Collect Handgun Bullet x5, a Syringe (do not use), and an Axe from the northeast. On the west side, find two Shotgun Shell x3 items and Weapon Parts x25.

Follow the agent to his safehouse to the west and enter. Use "Coffee Maker 6/7" (a refill station for health items).

Collect items in the safehouse: Gunpowder, Handgun Bullet x6, and an Explosive Bolt in the main room and mirror room. Also find Weapon Parts x40 and Shotgun Shell x2.

Talk to Sykes (another surviving NPC). He will ask you to restart a server in the Marrow to look for a way out, which will also unlock CACHE BOXES (containers for items) in the area.