Metro is probably the most fanatically anti-communist series there is. Not going to lie. Less so the books, which I haven't read in a decade, but the video games, especially Last Light could have been written by Anne Applebaum and Henry Kissinger for all we know.
Keep in mind that Last Light is a game where Nazis perform cranial inspections in a concentration camp, and still manages to make the Red Line the most morally reprehensible faction.
Funny enough, at times they couldn't even manage to present their anti-communism properly. All throughout the series, we're told the standard liberal BS about commie soldiers soldiers being more poorly trained than the Nazis, using human wave tactics, no food BS - until the second half of Last Light, where you have to fight their soldiers equipped with the most mall ninja shit you'll ever see, with laser sights, NVG, waves and waves of dudes in full metal armor, equipped with shit like miniguns and flamethrowers. Even their army possessing a running train and tanks, both of which are supposed to be extremely rare in this universe, but alas, even when the protagonist and his faction LOSES to the commies in a surprise attack, he's given the option of going full fucking ALLAH AKBAR to destroy himself, along with several hundred-thousandish healthy able men in a post-apocalypse universe
Ukrainians are absolutely fucking wild man.