Fallout 3
72 Achievements
1,550
73-98h
Not of This World
Completed "Not of This World"
20
How to unlock the Not of This World achievement in Fallout 3 - Definitive Guide
I apologise for how vague I've been but I've tried to make it as spoiler proof as possible without it being a terrible solution, I have however, linked in a video guide so if you're having any trouble with portions of the quest or generally just getting a bit lost around the ship, give it a watch.
*Credit to MahaloVideoGames for the videos
After receiving the transmission, make your way to the Alien Crash Site. When you arrive, you'll be abducted. You'll soon find your self in a holding cell with a woman named Somah. She'll say that if you start a fight, the Aliens will arrive and you'll have an opportunity to escape. After escaping, you'll see a young girl named Sally. Free her, and she'll take you through the ship. Soon, you'll enter a room with four bodies that are frozen in ice. After freeing them, the achievement will unlock.
After receiving the transmission, make your way to the Alien Crash Site. When you arrive, you'll be abducted. You'll soon find your self in a holding cell with a woman named Somah. She'll say that if you start a fight, the Aliens will arrive and you'll have an opportunity to escape. After escaping, you'll see a young girl named Sally. Free her, and she'll take you through the ship. Soon, you'll enter a room with four bodies that are frozen in ice. After freeing them, the achievement will unlock.
Story Related and Unmissable
Before starting this DLC make sure your armour and headgear are fully repaired and you have plenty of chems and health items, because there are some major battles ahead of you. It's also wise to leave all your weapons and ammo at home because they're going to be of little use against the heavily armed and shielded Aliens, you will find better gear on the Mothership.
WARNING: There is a nasty but rare bug where the game can glitch during the opening sequence thus preventing you from continuing. The only cure/prevention for this is to save before approaching the crashed Alien Spaceship in the Wasteland and if you do glitch, then reload your save and try again. For other solutions, please see here: LINK
After the opening cutscene you will wake up in a cell with another abductee called Somah, who will talk about how you’re going to escape. You then need to start punching each other when told to by Somah so as to attract the Aliens attention. Once some Aliens arrive, kill them and take their Shock Batons. Make sure you go to the left first as there's some recordings in a room at the end. After wondering about a bit you will meet a little girl called Sally. You need to free her from her cell by overloading the nearby generator by raising the cooling rods, then pressing on the Core Coolant Switches. After doing this, talk to Sally then retrieve your gear from a nearby Security Office and make your way to the Steamworks.
Note: If you haven't already got the Main Game trophy called You Gotta Shoot 'Em in the Head either by giving Mister Crowley the keys, taking the Power Armour for yourself or using the Operation: Anchorage DLC trick then you have an additional way of getting it now. When you were abducted, all your gear was confiscated and stashed in a box in a Security Office near your cell. Now If you have the Power Armour from the Outcast's Armoury in the Operation: Anchorage DLC, then retrieving it from the box in the Security Office will pop the trophy.
The Steamworks are crawling with Aliens and they're all shielded, it also doesn't help that your Human weapons (if you brought any with you) are virtually useless against them so stick to the Shock Baton until you can grab an Alien weapon like the Atomizer or Disintegrator etc. It's best if you follow Sally's instructions and play stealthily until you manage to get into the Engineering Core, else you will find things get hard really quickly. Once in the Engineering Core, it's just a matter of following Sally round until she takes you to where the Stasis Chambers are.
The Quest will end and the trophy will pop once you get to the Stasis Chambers and Sally has finished talking.