Fallout: New Vegas
75 Achievements
1655 XP
60-80h
Make up your Mind
Make up your mind... about your brain.
20 XP
3.0%
How to unlock the Make up your Mind achievement in Fallout: New Vegas - Definitive Guide
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This trophy is obtainable during the Old World Blues quest once you reach the Forbidden Zone. Be prepared, as once you arrive in this location you have to face a mini-boss enemy where you can disable (if you have the skills) or defeat it. After dealing with the situation, you’ll make your way into the lab and will need to talk to Doctor Mobeus in-which you’ll learn in the conversation that it will be up to you to convince your brain to want to return to your possession.
Go up the stairs where you will be able to locate and talk to your brain. It is advised you make a manual save before you talk to your brain. There is a possible bug where if you happen to have completed Come Fly With Me and That Lucky Old Sun from the New Vegas campaign in your quest journal, and you choose one of the compromise options, you could get caught where your brain says "Jason Bright and his followers launching into the vast unknown" and "HELIOS one coming back on-line" in an infinite loop. Your only way out of this would be to reload your game.
The easiest path to this trophy is having a Speech Skill of 75 and a Medicine Skill of 55 which will turn the conversation into your favor rather easily. For the specific dialog choices to choose you can refer to the video:
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We go to “The Think Tank” , where we talk with Dr. Klein (the same one who gave us all the quests). The marker on the map will update, inviting us to visit the Forbidden Zone Dome Entrance , which is located in the northern part of the Big Empty . But before you go there, I recommend that you make sure that you have enough ammo, stimulants and radiant, because otherwise the chances of survival will be very low. When you reach the location marked with a marker, go inside. If you are equipped with stealth armor, then she will immediately say something like “This look is pretty tough.” And this is true, because for the first time since part 3 we will have a battle with a boss, which will be the Giant Roboscorpion.
When Roboscorpion is finished, go to Dr. Mobius and talk to him and you can kill him if you wish. One way or another, after the conversation, return to the “The Brain Tank” capsule (it is located right there) and talk to your brain, convincing it to return back to your head. If you convince, you will receive the achievement for “Make up Your Mind” . Before talking to the brain, I strongly recommend saving.