Humor in the title and concept. Simple, intuitive battle-system; I like the idea. The battle mechanic worked smoothly. Personally I don't like clicking and dragging so much, but I still think it is a good mechanic (just not my preference). The simple visuals worked well together and it felt stylistically consistent.
I was a little confused at first about the direction of the stairs and how the player was moving from place to place.
I think a better indicator of completed doors would be a nice touch; instead of the door just being non-responsive, you could have a checkmark appear over it or or it makes a sound when you try to click it or a message pops up or something.
Great work!