I really enjoyed playing your game! The overall feel is great. The map is huge and it must have taken a lot of time to design it.
I also liked the story very much, although I have to say that the ending came rather abruptly.
Once you got used to the controls, they worked wonderfully as well. I think it would have been even easier if you could have used the space bar to climb the ladders as well.
But my absolute highlight of the game was how the worker walked himself back after each day!