Rusty's Fun House

Hint: I can't open the door to Rusty's Fun House.

Hint: I have the key, but the combination lock won't open.

Hint: I can't find a way to the roof.

Hint: What can I do in the room behind the secret door?

Hint: What is there to do on the roof top?

Nested hint: How do I reassemble the photo?
(sorry, cannot decode section)
Hint: I reassembled the photo, now what?