I really liked the presentation; it felt gloomy and the monster designs were cool, but I really didn't see the point of the game; there's no punishment for just getting out of the elevator when I monster comes in, nor is there one for waiting around until no one is in the elevator, nor was there an incentive to let the monsters in, so the gameplay is basically just "press the button when the monster pops up."
Regardless, I see there was real passion and effort put into this, and I really applaud you for having the game in two languages! Very impressive! I can see you're very talented and look forward to seeing what you do next.