Language Proficiency is gameplay mechanic in Rise of the Tomb Raider and Shadow of the Tomb Raider. Lara's knowledge of languages can be raised by reading documents, murals, and certain relics that contain text.
Increasing the proficiency in language will allow Lara to decipher Monoliths which will give directions to hidden coin or survival caches.
Rise of the Tomb Raider[]
In Rise of the Tomb Raider, the languages that can be learned are Ancient Greek, Ancient Mongolian and Russian. Each language marks a specific part of the valley's history. Ancient Greek was the language of the Deathless Prophet and his followers who hailed from the Byzantine Empire. Mongolian was brought to the region by the Hun army who were invading alongside Trinity. The Russian language came to the area via the Red Army who came to the area to mine the mountain for copper and uranium.
Shadow of the Tomb Raider[]
In Shadow of the Tomb Raider, the languages that can be learned are Mam, Quechua, and Yucatec.