Here's what all of the new levels look like. Olrox's castle has some interesting areas in them that you'll have to survive.
(NOTE: Some screenshots are waaay out of date)
Level 1 - Castle Entrance
Level 2 - Royal Chessboard
Level 3 - Castle Roof
Level 4 - The Pit/Courtyard
Level 5 - Olrox's Quarters
Level 6 - Clock Tower
