51-Tap the Basement door handle in your inventory and tap the trap.
51-Tap the pincer.
51-Tap the firewood.
52-Tap the weight.
53-Tap the lock piece.
54-Tap the Chest (maze).
54-Tap the magnet piece in your inventory and tap the maze.
Solution : watch video at 7:29
55 Tap the brush.
Go to the Attic.
72-Insert the lock piece on the safe.
Nihilum = 0
Tres = 3
Sex = 6
Octo = 8
73-Code is 0368
74-Rotate the inner ring : N above the A.
Solution in video time 14:08