It's pretty horrendous. The Soviets are the bad guys in their own campaign, from the narration down to the unit design. There are moments, for example when you go to heroic lengths to save a comrade, but the subsequent cut scene completely ruins it. The tonal shift is super jarring. It gets a bit better after the first few missions, which lean heavily into tropes, and you eventually get to liberate Berlin. I can't recommend finishing it unless you're invested in the gameplay or just want to wreck some fascists.

That said, I still play online pretty regularly as a Soviet main. DM me if you want to play coop sometime!