Aquelarre haver here (the original Spanish edition) I have read all books up to the ones about Europe. What do you want to know? Its system is basically CoC/Pendragon, so trad & crunchy, VERY detailed when describing medieval Spain peoples, customs, and traditions, but funny to read.

Lots of mythological creatures and dozens upon dozens of demons, lesser & major, to entretain your players. Also lots of adventure seeds and inspiration. My fab books: ⛧ Liber Nobilium - Noblemen & the Church ⛧ Ars Malefica - Folk magic, peoples & creatures ⛧ Daemonolatreia - Demons and demonology!