Place the GLASS CAULDRON over the fire; place the SULFUR and SOLVENT in it (I).
Use the DRAGON on the wood; take the ACID (J).
Go up; walk forward.
Pour the ACID on the grate (K); take the LOCK PART (L).
Go to the Gallery.
Place the LOCK PART on the lock for a mini-game (M).
Take the SAW (O) and LADDER (P).
Place the FLOWER on the cage (Q); take the HEART MOLD (R).
Place the SKETCH BOOK with the paintings for a mini-game (S).