Memoir 4:

Teacher is stronger than Jeanne:

Jeanne is noticeably weaker than she should be, according to Vanitas (side note: interesting that her being awakened was pertinent to Vanitas, though he being a bourreau explains it I guess) :

We know Luca can rewrite formulas pretty well. The extent of his power has yet to be explored:

Berneux was killed (probably by Naenia) after Vanitas healed him. His injuries are strange, his neck, legs and arms look twisted:

Memoir 5:

Amelia has trouble remembering Charlatan when Vanitas's previous patients seem to at least have vague recollection:

Teacher sent a letter to Orlok requesting he assist Noé:

All of Vanitas's reactions to Noé being an Archiviste: