Ho trovato la soluzione in inglese del gioco per PC, perchè credo sia uguale a quello PSX. Penso sia quello che ti serve:
Assuming the ghosts are numbered from left to right, the order is 3-2-4-1-5. In room with purple orbs in diamond, hit inorder (R-L-Bottom-Top). In looping rooms, start in room with orbs then go to next room.Go back to first room and then go left. Now go right to new area. The rest of the level is pretty straight forward and you should have no problem.