Assassin's Creed Syndicate English Localization Guide

Set to English: Change the value to english or en-US. For example: Language=english.

If the UI changes but subtitles do not, you may need to specifically locate sounds_eng.pck Steam Community localization.lang file controls the text/UI, while sounds_xxx.pck files in the Sounddata/Pc folder control the audio. Steam Community Change Language on AC Syndicate Fitgirl? : r/CrackSupport 12 Apr 2021 —

Role: It acts as a switch for the game's internal language engine. While voiceover files are large .pck files, the localization.lang file is a tiny (roughly 1KB) pointer that tells the game which text assets to load.

Locate the following settings and use the arrows to select English: Voice Language Subtitle Language Menu/Interface Language

Here is a quick guide on how to use this file to force your game into English. Why does this happen?

Error 3: Subtitles appear, but no UI