The Witch and the Hundred Knight: Revival Edition

(Story related)

Notorious monsters spawn more commonly on the Basement levels of the Tower of Illusion while on max difficulty, due to the Tower of Illusion being game’s challenge mode. You can, however, obtain this trophy while playing through the base game of The Witch and the Hundred Knight as while they do spawn, the chance for them to spawn is significantly lower than if you were to find them in the Tower of Illusion. Below is a photo that is featured in-game and explains what Notorious monsters are.

Notorious monsters will feature a skull by their health and will also have a unique name (or nickname), next to their monster type. Notorious monsters have more Health, Defense, and a higher Attack strength than their initial counterpart in the game. However, while they may be a different tier and have better attributes, they still share that monster's weakness. Simply put, defeat 100 Notorious monsters and the trophy will unlock.