Nightmare Achievement Any Player Count MOD

Description

This mod removes the 4-player requirement for the Nightmare achievement. By default, the game only grants it if 4 players are present at the end. With this mod installed on the host, completing a Nightmare run with any number of players (including solo) will grant the achievement to everyone in the session through the game's own achievement system — no external tools involved.

Installation instructions

[]Install UE4SS for Escape the Backrooms (see Requirements)[/]

[]Extract the NightmareSoloMod folder into:

EscapeTheBackrooms\Binaries\Win64\ue4ss\Mods\[/]

[]Write this line:

NightmareSoloMod : 1In the "mods.txt" file located in:

ue4ss\Mods\mods.txt[/]

[]Launch the game — no further setup needed

Main features

[]Grants the Nightmare achievement when completing the game on Nightmare difficulty regardless of player count[/]

[]Works for solo runs, duos, trios, and full lobbies[/]

[]Only the host needs the mod installed. Clients receive the achievement automatically. [/]

[]Confirmed working across platforms via crossplay. The host on PC can trigger the achievement/trophy for clients on other platforms including PS5. [/]

[]Does not affect other difficulties or achievements

Requirements

UE4SS for Escape the Backrooms:

https://www.nexusmods.com/escapethebackrooms/mods/138

Shout outs

Thanks to the UE4SS and ETB Community for making runtime modding possible without rebuilding the game. Thanks to the authors of the 16 Player Lobby mod, whose open source code was invaluable for understanding how the game's internals work.