Error: Unable to render character 0 (Merrick) because loop 2 does not exist in view 13
Error: Unable to render character 0 (Merrick) because loop 1 does not exist in view 13
What were you doing at the time?
1.: When scrolling my scroll wheel towards me activates the 'look' function. Is this intended?
2.: A bit odd: you can change the mirror in the first room without being near it.
What's a mouse wheel?
The mirror thing was intentional to save too much back and forth walking. We can change it if there is strong opinion on this matter.
Looking at the doorlock (first room) gives you still the reply two times. 
I think you have to be able to go back, because if you don't know the riddles, you might need/have to search i.e. for the cone pine - or stay in there forever.
Still?? I'll look into it again. As for going back, the only thing you need to defeat the Vampire Twins is the probe, which logically you must have if you pass through the yard. The pine cone can be used to give you the ability to survive forest fires, but if you miss it you can use a less tasty cockroach which gives you the ability to survive nuclear winter, and this results in an ever so slightly different ending. You do need the blood from the fridge to defeat the guards, but we could just make it impossible to leave the surgery without it. "What? Take that yucky carrot and not the juicy blood too?"
I've played it out. Really cool game.
I noticed something, that is a really small bug... almost unnoticeable...every time you leave the Exercise Yard(The room where umbrella is), the probe droid (or however is it called), flies to you from the top of the room. You see the problem is that, you can return to that room at any time and not use the probe droid, but he will still appear from the top and fly down to you.
This is probably stupid, and noone will notice this when playing the game( actually he will if he returns to this room).
Really, I am inclined to trap Merrick in the guardroom once he enters, and if he tries to leave the guards will shoot him, or the door will be stuck, or something. I've already spent a couple hours playing with Merrick going back and forth through the exercise yard, but clearly it's still not functioning properly. I'm reluctant to invest more time in this aspect of the game play since it just artificially makes the game longer. You may feel free to plead your cases otherwise -I'm just saying how I feel on the subject.