Welcome to the Atomfall speed run walkthrough. This guide covers how to complete a playthrough of Atomfall in less than 5 hours (closer to 1 hour) while avoiding calls and extracting with Captain Sims.
Refer to the Atomfall Achievements & Trophies Guide for details on all other achievements/trophies. The Atomfall All Endings Walkthrough covers the other 5 endings.
Atomfall Speed Run
It’s highly recommended you finish the game before doing a speed run. Doing so will help you get familiar with the map and the mechanics of the main story. This guide will combine 3 achievements/trophies:
- Quick Exit
- Not Expecting a Call
- Operation Atomfall
Setup
Start a new game on the lowest difficulty: Sightseer. This will let you breeze through the story’s golden path without worrying about gear and skills. Skip the cutscenes. Then takedown the scientist and collect the supplies in the bunker. Run out of the bunker without fighting the first enemy.
Battery #1
As soon as you leave the bunker, run toward the encampment. Punch the first enemy and take his cricket bat. This will be your primary weapon for this playthrough. Continue traveling northwest and takedown Molly. Loot her metal detector, atomic battery, and flashlight.
Battery #2
Head east toward the Interchange entrance. Once inside, go directly to the Central Processor. Grab the battery and place it in the system.
Data Store Delta
Exit the Central Processor and turn left, entering Data store Delta. Place your other battery in it. Go down the ladder, jump across the machines, collect the keycard, and raid the storage room.
Battery #3 & #4
Now head toward Robotics. Save the game in case you die. Use the cricket bat on the robot while avoiding the turret. Try to hit the circuitry in the front. Once it is disabled, remove the battery. Optionally, use the metal detector under the turret to grab more supplies.
Go inside Robotics and up the stairs. Head into the central room and through the vent to collect the keycard. Enter the main control room with the keycard and activate the machine. This will spawn another robot. Save the game and dispatch the robot. Collect the battery.
Data Store Charlie
Return to Delta and go across the hall to Charlie. Activate it. Go down the ladder and loot the corpse for a keycard. Press buttons 5, 7, 4, and 2 to open the storage room. Loot it.
Cellar Key
Follow the signs outside Charlie toward Medical. Once inside, hug the right wall and collect the cellar key in a lit alcove.
Battery #5 & Inoculation
Exit the Interchange and run toward Wyndham Village. Go inside the church, takedown the priest and the other NPC. Loot the key from the Vicar and open the chest on the balcony for the final battery. Head down to the basement and inject yourself with Dr. Holder’s inoculation.
Captain Sims
Now you can optionally kill the shop keeper for extra supplies. Otherwise, go into the bakery. Takedown Iris and snag her key. Go upstairs and dispatch her husband.
If you pre-ordered the game, you can collect 2 buried caches in the park for a good gun and some medical supplies. Then go to the Village Hall and meet Captain Sims. Choose the 1st dialog option during the full conversation. Letting him know about Iris will get you on his good side and he will ask you to question Dr. Garrow. After that, tell him about the murder in the church and pin it on the priest.
Signal Redirector
Take the east exit out of the village toward Skethermoor and enter the prison. Continue along the path until you reach the Loading Bay. Hug the left wall, enter the first room, and acquire the signal redirector. Question Dr. Garrow and pretend you’re going to help her, but insist she tells you about the device first. Exit the prison.
Data Store Beta
Enter the Interchange in Skethermoor. Either sneak passed the guard or run quickly toward and down the elevator shaft. Kill the 2 enemies just inside the vault. When you reach Data Store Beta, insert a battery.
Head down to the lower floor, loot the corpse for a keycard, and use the redirector on 2 switches. Open and loot the storage room.
Radio
Return to Captain Sims either through the exit to Skethermoor or the one leading back to Slatten Dale (run through Delta). Inform him on the device and he will ask you to retrieve a radio from the druids. Leave the village through the west exit to Casterfell Woods.
Travel to The Speaking Cave via the crack next to the shed in Datlow Hall Grounds, kill any druids in the way, and acquire the radio. Return the radio to Captain Sims and he will ask you to destroy Oberon.
Data Store Alpha
Enter the Interchange through the vault in Wyndham Village. Before entering Data Store Alpha, save the game. Run into the infected area, shoot the 2 pods, and activate the data store. Then, go to the Central Processor and use the signal redirector on the 4 switches in the floor. Flip the final switch on the panel to activate the bridge to the dig site.
Destroy Oberon
Quickly run to the Oberon Dig Site. Save the game in case you need it. Turn on all 4 explosives around the crater. Flip the switch in the control room to activate the self destruct sequence and run out of the dig site.
Extraction
When you reach the Central Processor, turn right and go through Alpha to Wyndham Village. Enter the Village Hall and collect the note on the table left by Captain Sims. Use the east exit of the village to reach Skethermoor. Run directly to Protocol Camp. Captain Sims will either be by the helicopter near the armory. You may see him walking the path between the helicopter and the entrance from the village. Talk with him and let him know that you’re ready to leave.
If you followed this guide and did not answer any calls, you will receive all 3 achievements/trophies.
That’s it for the Atomfall Speed Run walkthrough. Please post any questions or comments below. Thanks.