Russian language in BL2

Currently there are two separate games: unsupported BL2 (no Ultra HD DLC, no new Lilith DLC, problems in multiplayer) with RU and base BL2 without RU. How to combine these games? I want to play the full game, but in my own language, and now I haven’t finished both, because I cannot choose…

You can install the fan-made russian localization on INT version. Although, it’s still a work in progress.

Avast says it infected by IDP.ALEXA.51…

Looks like i’m out of options here. But you can ask about it on that page.