Thanks for playing!
Interesting! I also have a multi-monitor setup, but didn't run into any issues with the cursor leaving the screen. Seems like the kind of bug you usually find from extensive play testing on different setups, so thanks for instantly suggesting a solution to it!
Good point. We planned to have a longer tutorial in the beginning where players could learn each mechanic one by one (crouching underneath debris, picking up an item etc.), but had to boil it down to a very short tutorial. So the goal, was just for player's to use all their buttons at least once before entering the facility.
Yup very true. I already answered as to why this may have happened in my comment below.
The monster teleports the first time you enter a new room, to guarantee that you have to deal with it. In my playtests before implementing the teleportation, I was able to lure it into a corner and then complete the whole game without it ever finding me again, because it couldn't pick up the noise I made. Within the fiction of the game, one could say that the monster - living in this facility for a longer span of time - knows ways around the facility (like vents and the likes) the player doesn't. Thus, it's able to seemingly appear out of nowhere. ;)
Thank you for your feedback. The game is nowhere near completion and definitely needs more polishing before it's a full-fledged experience.