I enjoyed this a lot!
Plenty of well paced, and well designed scares. The over all story was SUPER interesting! I do wish the story telling would have come from a blend of notes and perhaps audio or some other medium.. (broken messages left through the radios around the bunker or something)
Reading note after note does get a bit stale. But reading all of the notes wasn't necessary for a "full" experience in my opinion. Still awesome, and would recommend!