I think this is a really neat game. The world/setting is well established very early on and holds a nice tense atmosphere from start to finish, without the need for overly shocking jumps or things of that nature. The tension grows toward the end and I felt you dealt with the final act really nicely. The visuals and applause as the player ascends the corridor before their ultimate fate was bizarre and enthralling.
I'd like to make special mention of the 'company logo' and it's use on all of the doors. That logo is excellent, communicating the theme beautifully before any words are even spoken.
In terms of unexpectedness, some of the puzzles did catch me off guard, in particular the money-path (which was also the one I thought had the best narration).
Very nice job :)