Fixed the arena not getting randomized.

1.5 Release

General Changes

• Added more randomization in maintenance and soldier quarters.
  
• Added a hint for the fuel storage key.
  
• Slightly increased the chance of bombings stopping the generator.

1.4 Release

Updated for latest game version (1.31).

General Changes

• Walking or running is slightly louder.
  
• Slightly increased the chance of the stalker killing the player when near a hole.
  
• Can now craft 100% fuel canister by combining a fuel bottle with a 50% fuel canister.
  
• Increased the distance a permanent leaking gas canister needs to be moved before it stops leaking.

Fixed the stalker getting stuck in the maintenance tunnel.

1.3 Release

General Changes

• Made the stalker more unpredictable with the increased unpredictability difficulty setting.
  
• Added more randomization for gas leak areas.
  
• Added guaranteed item spawns in gas leak areas.
  
• Added a random option for the initial powered fuse boxes difficulty setting.
  
• Maintenance tunnel now always has 3 corpses.
  
• Added a guaranteed meat spawn in the maintenance pantry.
  
• Fixed the stalker getting stuck in the maintenance pantry.

1.2 Release

General Changes

• Added randomization in the tunnels.
  
• Added more randomization in the central bunker and the arsenal.
  
• Added more randomization for the dynamite, cutters, and communications key.
  
• Added more randomization for optional items.
  
• Added slight randomization for Delisle's dog tag.
  
• Made the stalker slightly smarter.
  
• Added functionality for the damage resistance difficulty setting in the arena.

1.1 Release

Updated for latest game version (accessibility patch).

General Changes

• Added 2 new difficulty settings listed below.
  
• Increased the overall difficulty of the arena.
  
• Added blood marks to important and randomized notes that are found in the environment.
  
• Slightly increased the amount of fuel canisters.
  
• Slightly increased generator run time per fuel item.
  
• Slightly reduced the chance of the stalker emerging when the generator is on.
  
• Randomizing difficulty settings will no longer randomize the allow saving setting.
  
• Modified the main menu logo. Thanks to @Zippy for the modified version.

• Stalker Damage Resistance:
  
  • How resistant the stalker is to different damage types.
    
  • Replaces stalker bullet resistance difficulty setting.
    
  • For bullet damage, it works the same way as the replaced bullet resistance setting.
    
  • For other damage types, this setting affects how fast the stalker becomes immune to each damage type.
• Fuse Amount:
  
  • The amount of fuses available in the game.
    
  • Only affects extra fuses and not the amount required to power every area.

1.0 release

General Changes

• New game plus is unlocked by default.
  
• Added randomization of story items.
  
• Added randomization of optional items.
  
• Added randomized map changes.
  
• Improved dog tag randomization.
  
• Keys are not highlighted until you have the note that points to their location.
  
• Fuel is no longer rounded up when refilling the generator.
  
• Fuel canisters now contain either 100% or 50% fuel.
  
• Fuel bottles contain 50% fuel.
  
• Pouring fuel with a canister costs 50% fuel.
  
• Crafting a fuel bottle will use 50% fuel from the canister used to craft it.
  
• All power switches are off by default.
  
• Fixed a corpse that could spawn without rats.
  
• Safe room is more unsafe with the reduced safe room difficulty setting.
  
• Stalker run speed is increased.
  
• Stalker is more unpredictable, especially with the increased unpredictability setting.
  
• Stalker becomes more resistant to bullets after being shot a lot of times during a playthrough.
  
• Shotgun damage to the stalker is equal to 2 revolver shots instead of always making the stalker retreat.
  
• Added better locational damage for the shotgunner.
  
• Increased the amount of shotgun shells.
  
• Increased the amount of sticks.
  
• Torches have reduced duration to compensate for the increased amount of sticks.
  
• Torches burn faster when walking or running.
  
• Flashlight second charge lasts slightly less.
  
• Flashlight third charge lasts longer but is much louder.
  
• Gas grenades activate faster.

• Power Switch Fuel Consumption:
  
  • The amount of fuel consumed by active power switches.
    
  • Turning off a switch in one section in a daisy chain, will cause subsequent switches to turn off and not consume fuel.
• Bombing Chance To Stop Generator:
  
  • The chance of the generator stopping when bombings happen outside the bunker.
    
  • Can only trigger in sub-levels.
    
  • The generator can stop even while on infinite run time.
• Save Fuel Cost:
  
  • The amount of fuel it costs to save.
    
  • Ranges from 50% to 200%.
    
  • Disabled on easy, normal, and hard mode.
• Hide Trap Warning Signs:
  
  • Hides the red warning signs near traps.
    
  • Active on hard and shell shock mode.
• Stalker Light Resistance:
  
  • How resistant the stalker is to lights being on.
    
  • Affects the stalker's presence and ability to emerge while the generator is on based on how many power switches are active.
    
  • On low light resistance, direct flare hits cause the stalker to retreat.
• Shotgunner Health:
  
  • The amount of health the shotgunner has.
    
  • On high health, the shotgunner can survive from a headshot.
• Soldier Quarters Puzzle:
  
  • A new puzzle in the soldier quarters.
    
  • Active on normal, hard, and shell shock mode.
• Randomized Revolver Location
  
  • Replaces revolver in locker difficulty setting.
    
  • The location of the revolver is randomized, so it can spawn in the environment or in a locker.
• Harder Fuel Storage Access
  
  • Replaces fuel storage code lock difficulty setting.
    
  • Adds a randomized obstacle to the fuel storage.
    
  • Active on normal, hard, and shell shock mode.