There were some really cool things here! I liked the monster designs - they felt really uncanny and creepy - plus the bear trap was cool. I liked the time skip at the start, plus the way that the game 'loops' at the end. I like that you weren't afraid to make the player wait. I thought that the walk to the building near the start and the elevator rides gave the game more of a sense of atmosphere, for example.
Agree with the others about the graphics. I like that you couldn't tell exactly what things were some of the time, but it would look great with a little more polish. Some of the boundaries of objects were off - for example, you can 'climb' the wall of the building with the ladder near the start/end, then keep going up into the sky! I couldn't work out what the screwdriver was for either, and the character's stamina seemed to drain very quickly.
Still, overall this was really cool. Well done!