Combo Master
Pull off a 100-hit combo.

Simply perform a combo containing at least 100 hits, there are several easy ways to get this trophy:

Prologue: During the prologue, you will fight against hundreds of shades in a small courtyard. Use [R2 Button] to roll to cover up ground if there isn't an enemy close enough to you, although you should be able to achieve this without even trying.

A Tale of Study: Early on in the second part of the game you will be able to partake in a quest called 'A Tale of Study'. To activate the quest, talk to the butler at the mansion, who will tell you about a shade in the study. The shade in question will not attack you and will take several hundred sword strikes before falling, although it will teleport at times, so get in there quickly and hack away.

The Aerie: In the second part of the game, you will receive a mission to visit the chief of the Aerie. During the mission you will be attacked by an army of armoured shades. They take several physical attacks to be defeated, so this is also a good place to obtain the trophy.

NOTE: Magic attacks do not count for the trophy.