There are 10 new Trophies in this DLC.

Bronze

It Ain't Lion    
You spoke to the Lamasu.    

The Path Not Taken    
You respecced your character.

Bones on the Sand    
You survived your first encounter with the undead in the desert.    

Confirmed Shriner    
You lit the sacred flames at all three desert shrines.    

The Worm Has Turned    
You defeated the Giant Sand Worm.

All Ye Who Enter Here    
You performed the ritual and gained access to the Agallan Vault.    

Mistress of the Abbey    
You met Eleanor, de facto leader of the Abbey of St. Hiram.

Silver

Mummy Dearest    
You defeated High Priest Molochi.

Litany Learned    
You learned the recitation in the Temple of Azunai.    

Anointed Ointment    
You collected the sacred oil in Sandspring Cavern.

http://www.ps3trophies.org/game/dungeon-siege-iii/trophies/