Shows all the rooms with hidden ladders to secret rooms.
The ladders can be hard to see, but they are always on the bottom of the screen and look just like a normal ladder but transparent.

Each secret room gives access to two different hats for the player character.

Hats are always found in the same order, i.e. they are not tied to the respective rooms.
These are the available hats and the order you'll find them in:

1. Top hat, Greek helmet
   
2. Cowboy hat, Ponytail
   
3. Viking helmet, Astronaut's helmet
   
4. Knight's helmet, Fire wig
   
5. Wizard's hat, Chef's hat