Well. . .
I have to say, though others seem to have a view that the Being's identity was a little less than predictable, I personally believe this was fairly obvious, even to the point it was taken. The ending was a little on the let-down side of things. It seemed more like time was running short so it was easier to just put a text card up rather than really explain things. That being said, were this a made-for-tv movie, I'd have thought a bit more of this because it is better than most recent Sci-Fi (Read SyFy) movies.
The game is great, I like the concept and the overall feel, and some of those tools that just kinda disappear I would like to see elsewhere. And, the multi-tool is carried across the latter three games, but used in Episode Two, and for exactly one part in the Episode Three.
My only other concern is the fact that there is no multiple ending. There is no way (That I can see[Spoilers ahead]) to set the ending toward finding the Doc. [Spoilers Stop] I can see where that would be rather long-winded, even for this kind of game, because if that path had been put in, there would probably be a few out there that would want an extra fork in the storyline, myself included.