People saying that it shows 1 group as good or others as bad, have either not seen all the episodes, or they're biased to hell and back. The show depicts villains and heroes in every corner. British, Russian, American, German, French... Perhaps it is a sign of the times that we live in that people choose to see just one side, but I assure you that it hits in all directions. It also shows humanity and decency from all directions.
This show is grand. It has mystery, the violence is realistic and used to great effect, the characters are well written and the connection to real events has a unique spin in that it depicts the post-war time of Europe rather than WWII. The set design alone is worthy of all the praise possible. So is the use of actual British, French, American, Russian and German actors. It would've been easy to just stick a bunch of Swedish and English actors into it all and call it a day. But they didn't, because this show is so clearly a labour of love. The one thing that confuses me, and surely others, is why it's called different names depending on region. To me as a Swede it is called, The Defeated, to others it's called Shadowplay. It causes unnecessary confusion for viewers, but those that do watch it all the way through tend to give it positive ratings.
Give it a chance. It is the first show I watched in 2021, and it set a VERY high bar for any upcoming shows to reach.