I replayed this game this week, and I really enjoyed it. This was the first time I got everything. Every Xeno spotted, every collectable collectabled.
The ending was very satisfying, and I felt it was in harmony with the vibe of the game.
Favorite moments:
* When the underground unlocked, which completely surprised me (Either I never got that far last time I played, or my memory is... um...)
* When I got to the end of the Journal storyline (The second-to-the-last entry had me scared it would be a tragic end for Dr Randi. Xenos can be dangerous!)
* My final Xeno sighting (Biggestfoot)