Trouble Brewin'

Trouble Brewin' is a side quest in Fallout 4.

Detailed walkthrough
Trouble Brewin' is a sidequest in Fallout 4. You get the quest from Rufus Rubins in the Hotel Rexford, located in Goodneighbour. Your task is to get Drinking Buddy, a modified Protectron/micro brewing machine, from The Shamrock Taphouse and bring it back so no one has to keep drinking the barman's normal swill.

When you reach The Shamrock Traphouse, there will be a few easy raiders inside, an elite raider named "GAFF" who spawns upstairs, and mole rats down in the basement where the robot brewing machine is found. for the sake of ease just clear the building. When you enter the pub, the room upstairs on the door to the left is a room with a safe. when you get to the basement, you will notice that the quest marker is on the robot in the container. the security terminal to unlock it is expert level, and even Nicky Valentine can't crack it. There is a note on Patrick's Terminal that says he's stashed the password down in the basement. if you jump onto the yellow box on the wooden shelves and look between the hanging pipe and the wall, you will see a flashing red light and a red tool box, walk up to it and you will see the holotape with the password on it.

Notes located on Patrick's Terminal in the basement indicate that the robot may be a bit frail, and express concerns about transporting him to the buyer. There is no need to be concerned- send Drinking Buddy to the Hotel Rexford. He will continue there without supervision and eliminate any obstacles in his way.

Occasionally his Protectron programming may cause him to deviate to chase an enemy. Once the enemy has been lost or killed, he will return to his journey to the Hotel Rexford. You will not receive an updated quest marker until you arrive back in Goodneighbor.

Once installed at the Hotel, you can ask Buddy to tell you a joke, buy cold beer from him, or ask him where to find additional recipes. Additional recipes are located on holotapes found in local bars and breweries around the Commonwealth.

Or you may choose to keep him. If you select this option, he is sent to a home location of your choosing. Note: Codsworth will appreciate you choosing this option if he's currently accompanying you.

Journal entries
-Find the Brewing Machine -Send the Drinkin' Buddy to the Hotel Rexford (optional) Keep Drinkin' Buddy for yourself -Follow Drinkin' Buddy to the Hotel Rexford -Collect your reward from Rufus