Hub 3: Griffin Chapel

Walkthrough
If you have been both to the Wolf and Dragon Chapel, according to my walkthrough, you’ll be able to complete this level in only one visit...

Get into the central room. Kill all the monsters there, break all the vases, pick up all the goodies. Then take the stairs down (there are two flights on the south, divided by a Chaos Serpents behind bars). Kill all the monsters down there and take the stairs up on your right (west). They lead you to a platform, stepping upon which counts as the fifth part of the puzzle.