Don't know if this will assist other players but for what its worth:
After getting through the timed pit puzzle you make your way through to a chamber wherein lies the Ornate Key. Now first put a stone or torch in the recess where the key lies before taking the key.
If you don't the exit door closes and various monsters are released into the room, and they can be very difficult to kill.
A way round this is to as above put a weight down take the key and then very quickly pick up the weight - put it down again and you can make it through the door before the monsters are all released. Make your way back to the pits and there you can deal with them one by one thus gaining points.
