Great game!
One very small nitpick: entering and leaving ladders requires perhaps a bit too much precision when compared to the arcade "Bagman", which I think has only one pixel of tolerance (but suffices).
I really liked this game, it seems like a very good job, my congratulations to the entire team behind the game. I have it in my collection. Continuing along the lines of the comment above, I would appreciate it if in future revisions of the game: that such precision would not be required to enter a tunnel or enter a staircase.