Destroy the source of the Mutants.

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Destroy the source of the Mutants.
Vats.jpg
The vat teams prepare their next victim...
Quest data
LocationMariposa Military Base
Given ByJacoren
Reward10000 XP
Related quests
previous:
Find the Water Chip.
leads to:
-
Destroy the Mutant leader.
 
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Gametitle-FO1.png

As long as someone is creating hostile mutants at this rate, the Vault's safety is at stake! Find and destroy this lab as soon as you can.

Jacoren

Destroy the source of the Mutants is a main quest in Fallout.

Quick Walkthrough[edit | edit source]

  1. Travel to Mariposa Military Base.
  2. Kill the super mutants and loot the holodisk that holds the door code. The Vault Dweller can use a radio to draw some of the guards away from the door and earn 1500 experience points.
  3. Navigate to the first elevator. Yellow force fields can be temporarily disabled using the Repair skill in their devices, but beware, using the Tool won't work. Red force fields can be traversed, though the Vault Dweller will take minor damage.
  4. Travel to the third level.
  5. Make your way to the south elevator.
  6. Travel to the fourth and final level.
  7. Kill the Lieutenant and VanHagan for a key to the north-west area.
  8. Enter the north-west area with the Children of the Cathedral followers. There is one in particular that stands in front of the console (northernmost console, facing south).
  9. Kill him, loot the password from his body, and access the terminal. If the Vault Dweller's Science skill isn't high enough to decode the messages, select the option second from the bottom. It gives the most time and turns all yellow force fields red.
  10. Get out.

Detailed walkthrough[edit | edit source]

If the Vault Dweller enters Lost Hills and speaks to Elder of the Brotherhood located on level 4, or to Head Paladin Rhombus on level 1, they will both tell them that there are rumors of an army massing to the north.

The Military Base is located a good number of squares to the northwest of the map, far from anywhere else in the wasteland. The desert surrounding it is patrolled by Unity kill-teams, equipped with miniguns, laser rifles, and rocket launchers. They'll also usually have a few centaurs or floaters for pets.

Once the player finally finds the massive installation, they need to get inside. There are four mutants outside the base, 3 with laser rifles, one with a rocket launcher. The player can use a radio to draw the launcher and two of the riflemen away from the base, and earn 1500 XP for tricking them. The mutant who doesn't leave holds a tape that contains the door code to the base's entrance. Alternatively, Katja can also pick the lock. Enter the main base.

Combat solution[edit | edit source]

Once inside, the player will immediately trigger the alarm if he isn't wearing robes and Mutants will open fire on sight. There are four which come running, two with miniguns, two with rocket launchers. Defeat them, then check out the force fields. The yellow ones can be shut down for a minute by using Repair on their emitters, while the red ones can be run through in exchange for a little damage.

There are two computer consoles behind a few yellow fields that the player can hack to take control of the base's security systems. The player can alter the robots' programming on the console near the elevator, and set his radio's frequency to that of the emitters to shut them down remotely on one in the far south-eastern end of the level. Tampering with the robots will make them friendly, and changing the pest control to "large pests" will kill three mutants on the second level.

While the second level holds plenty of loot, the third level is where the player needs to go. They'll come across a big, suspiciously empty room. If their Traps skill is high enough, they'll find all sorts of landmines and tripwires in there. The player needs to get to the yellow field at the end of the hall, and blast the two mutants there; Krupper and Flip.

After taking another elevator down to level four, heading to the left will produce an encounter with Vat Team 9, a crack squad of mutant soldiers, while the right leads to the Vats and the Lieutenant and VanHagan of the Children.

If the player enters the Lou's office on his own, without being transported there by Flip or Harry, the Lou will shoot on sight. He's armed with a powerful Gatling laser and a bulky 310 HP, while VanHagan will snipe away with his Glock 86. If the player is dragged here by a mutant, the Lou will interrogate and torture them, then lock them up on level 3.

The encounter with the Lieutenant is entirely optional. The Vats control room is down the hallway past Vat Team 9's quarters, the room with all the COC techies. Use the terminal in the center of the overlook room to set the base to self-destruct. If the player's Science isn't high enough to decrypt the gibberish the terminal shows, they should pick the second one from the bottom, which sets the timer to the longest possible duration and removes yellow force fields. Alternatively, a keycard from one of the techies can be used to automatically decrypt the codes.

Afterwards, clear off to the worldmap.

Infiltration solution[edit | edit source]

If the player is wearing some robes when they walk into the outer Military Base map, they can trick the mutants and get in without triggering the alarm. That will let them sneak down to the control room and blow it to pieces without wasting a single round of ammunition. Another approach is using a Stealth Boy and sneak through, but keep in mind you will need a high sneak skill and cannot walk too close to the mutants or they will detect you. The Lieutenant, though, can see through their disguise if talked to.

Reward[edit | edit source]

Notes[edit | edit source]

  • If the player managed to convince the Elders of the Brotherhood of Steel to help attack Mariposa, there will be three Crack Assault Paladins waiting on the map. Each is wearing T-51b power armor, one has a CZ-53 personal minigun, one has an L30 Gatling laser, and one has a rocket launcher. They will follow the player around the exterior and blast the four mutants away, but they won't enter the base, which limits their usefulness.
  • If Harry is still alive in the Watershed at Necropolis the player can ask him to take to the base, wich will avoid the dangerous journey to Mariposa Base (even with 100% Outdorsman a fairly high number of super mutants patrols is encountered in the travel).
  • The speech given by Jacoren at then end of the quest is referenced in Fallout 3 by Amata after the Trouble on the Homefront quest.
  • According to the Fallout demo this quest was originally going to be called "Destroy the Vats."[1]

References

  1. Fallout demo PIP-Boy: "{1002}{}{Destroy the Vats.}"