C:\Program Files (x86)\Steam\steamapps\common\Total War Attila\data Delete or rename other language files (e.g., local_ru.pack local_fr.pack ) to avoid file collisions.
If you only need menus and unit cards in English, but don't care about voice lines: Total War Attila English Language Pack -
The English pack is the baseline for the global modding community. Mod Dependency : Popular total conversion mods like Medieval Kingdoms 1212 AD The Dawnless Days often require the English version to function correctly. Language Mismatch Total War Attila English Language Pack -