The localization issue was resolved by the community.
Recently, the localizers from Mechanics VoiceOver (R.G. MVO) remembered Warhammer 40,000: Space Marine - Master Crafted Edition. At release, players found out that Russian localization was missing from the game - now this has been fixed:
[...] for some unknown reason, the Russian localization was completely cut out of it. We decided to restore justice and ported the voice acting to the new version of the game, assembled it all into a convenient installer and added the existing text port there. So, anyone who wants to feel like a harsh space marine in 4k resolution, welcome.
Reviews of Warhammer 40,000: Space Marine - Master Crafted Edition on Steam are mixed: some players did not like the quality of the remaster.