The daytime segments were interesting enough in a psychological way, and the night segments were fairly interesting in an exploration based way... Of course I couldn't help but constantly wonder if I was doing something wrong while exploring, despite picking up what the game had asked of me. It was as if I was required to fail, despite taking every precaution... especially since no one told me that the security drones could open doors. I mean, I should have noticed it when it happened the first time and I was just barely able to escape, but I thought I must have just forgotten to do so when I went in the room. aaaand since I had no way of knowing which direction the security drone would look in first, I ended up hiding in the wrong corner, getting caught and wondering if I had actually done everything I could that night.
The achivements are definitely an interesting way of directing the player at times, but since they don't always activate right away it's kind of hard to tell what you've done in a night. These are just personal issues, of course. I like to be a completionist and it bugs me whenever I can't do everything I can in a game. Especially since there isn't a save system so you have to do every chapter from the start whenever you want to try again. But maybe that's the point?