Cheaty

Jump through floors:
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Hold [Ctrl] and jump to pass through floors that
have rooms underneath them.

There is a cheat for Castle Infinity. I don't know if
it's a bug or not but if you hold control and jump, if
the floor isn't directly over null space, (i.e. Going
through the floor there will take you to beyond the
beyond.) then you'll go right through the floor.
An exception would be in your room looking at your points.
If you do the trick here, you'll go down into the little
tab and be able to jump off and into beyond the beyond.