Tintin au pays des Soviets is a different kind of album from Tintin. This is the only album that was released in original black and with as well as with the original drawings. Hergé did not like this album, which was more a series of gags than a real story.
And that is indeed the problem of this album. In every two pages, Tintin is in the middle of an explosion or gets thrown away by a car or a train. This feels very boring and there is no real fun reading it.
But, since it marks the very beginning of Tintin, this album is simply a must-have for every Tintinophile.
Meanwhile, the album is completely and undeniably anti-communist. There are a few classic scenes, especially Tintin discovering that some factories are actually sets. Very powerful.