I played it a bit, looks really nice so far but there are some bug. First, at the beginning of the game I thought my screen was frozen. Pressing A or D made footstep sounds but I couldn't see any character moving. Turns out, my character was outside of the screen to the right. There were no indications that my character was outside the view, I thought I was one of the two hotel guards at the entrance.
Second, at the elevator nothing was happening. So I got out of the elevator to enter it a second time, and then the guy who was showing me the way to my room disappeared. There was nobody outside the elevator anymore and nobody inside either.
I really like the idea of the game and it has great potential, but you need to improve the way you script events and you need to make it clearer to the player what needs to be done.
For the game story you should probably use a finite state machine. You could have the "intro state", in that state the camera follows the player. When the player is close enough to the first guard, it could switch to the "GuardFromTheIntro" state etc etc. This way the events in your game will be easier to debug. For example stepping out of the elevator wouldn't have made the guy showing me the way disappear, he would have simply kept waiting in the elevator because the condition for the next state never would have been met.
Good luck with this project, you're using interesting game mechanics - I hope you keep working on it and improving it.