This game has a great premise and some really surprising and interesting audiovisual effects. I really liked the use of heavily distorted VO in the video tapes. But sadly, the text through which the narrative is mainly conveyed didn't feel right to me. Often, the same document will waver between a technical or scientific voice, and a more informal voice that's closer to an e-mail conversation. This is especially distracting in Strugatsky's report. Technical writing is typically verbose, so I understand the need to shorten it up somehow, as well as the difficulty of mimicking science/medical jargon, but there may have been a better approach. One that comes to mind is to break up the writing into smaller fragments - use the conceit that the important bits are surrounded by text that's "corrupted" or otherwise unreadable. One text-heavy game that uses this to good effect is The Talos Principle. (Strugatsky's report is broken up into excerpts, but what I'm suggesting is that the excerpts themselves could've been fragmented.)

Another thing that bothered me was that the nature of the story is foreshadowed or outright exposed a little too early in the game, so there is not much sense of mystery as you play. One of the first pieces of text you encounter is the novel in the cabin, which would have been better placed near the end of the game. Controlling when the player sees certain things would have required a more linear structure, but I think this would have improved the narrative's impact enough to be well worth the tradeoff.