How to Play the Custom and Shell Shock Halloween Mode in Amnesia: The Bunker

The game just got a lot more difficult.

Amnesia Bunker Shellshock Custom Halloween
Image via IGDB

Frictional Games have surprised us by giving us two new game modes for Amnesia: The Bunker, just in time for Halloween. In this article, I will show you how to unlock and play the Shell Shock Halloween Mode, as well as the Custom Mode.

How to Unlock Shell Shock and Custom Game Mode in Amnesia: The Bunker

Shell Shock and Custom Game Modes in Amnesia: The Bunker are unlocked by first completing Amnesia: The Bunker at any game difficulty. However, if you do not want to play the entire story mode first, or you lost your save file, you can see the shortcut for unlocking it in the last section of the article.

What is Shell Shock Mode in Amnesia: The Bunker?

Shell Shock mode is a hardcore-difficulty mode that will completely shake up your playthrough. Additional difficulties and obstacles will be added, and some essential items will be randomized, forcing you to throw all your knowledge about the item locations out of the window. The Safe Room may no longer be safe. Saving your game may not be available anymore.

What is Custom Mode in Amnesia: The Bunker?

Custom Mode in Amnesia: The Bunker is a way for players to adjust just about every aspect of the game to their liking to create their very own difficulty mode. Here are the things you can adjust:

  • Initial Playthrough Conditions (if you want to act like it’s your first time)
  • Generator Run Time Per Fuel Item
  • Flashlight Charge Duration
  • Torch Burn Time
  • Ammunition Amount
  • Resource Amount
  • Trap Amount
  • Save System (You can disable saves completely or have them cost fuel to re-ignite the lamp)
  • Save Lamp Locations (There are multiple lamps in the game on easier difficulties)
  • Stalker Presence
  • Stalker Reactivity
  • Stalker Aggressiveness
  • Stalker Recover Time
  • Stalker Lethality
  • Stalker Retreat Behavior
  • Stalker Bullet Resistance
  • Increased Stalker Unpredictability
  • Rat Damage
  • Rat Aggressiveness
  • Rat Corpse Amount
  • Shotgunner Reactivity
  • Shotgunner Lethality
  • Initial Inventory Size
  • Game Paused in Inventory (Gotta manage your stuff fast!)
  • Hardcore Health System
  • Player Health Regeneration
  • Grenade Player Damage Radius
  • Player Damage From Gas/Fire
  • Fuses and Fuse Boxes
  • Initial Powered Fuse Boxes
  • Reduced Safe Room
  • Revolver in Locker
  • Randomized Locker Locations
  • Fuel Storage Code Lock
  • Fire Duration
  • Gas Duration
  • Amnesia-Bunker-Custom-Difficulty-1
  • Amnesia-Bunker-Custom-Difficulty-2
  • Amnesia-Bunker-Custom-Difficulty-3

How to Unlock the Shell Shock Halloween Mode If You Haven’t Finished Amnesia: The Bunker

If you have not unlocked New Game+ in Amnesia: The Bunker yet, you can go to the difficulty selection screen (when you are starting a new game) and hold any button (that’s not an escape button) for about five seconds. Check out the video below at 1:15, where Fredrik Olsson, Creative Lead in Frictional Games, is demonstrating how it’s done:

Then, New Game+ will show itself as a clickable option in the bottom-left corner.

You might want to read about All Amnesia: The Bunker Achievements if you want to 100% the game.

About the Author

Nikola L

Nikola has been a Staff Writer at Prima Games since May 2022. He has been gaming since being able to hold an Amiga 500 joystick on his own, back in the early 90s (when gaming was good). Nikola has helped organize dozens of gaming events and tournaments and has been professionally attached to gaming since 2009. His current favorite titles are Vampire Survivors, CS2, Legion TD 2, Below the Stone, Brotato, Power Chord, and Halls of Torment