The "Galuf's Grail", "Dorgann's Trophy", "Kelger's Cup", and "Xezat's Chalice" achievements and trophies (acquired for completing various levels of C'eith Stone missions) are a reference to the Dawn Warriors in Final Fantasy 5. Galuf was a playable character for a little over the half of the game, and Dorgann was the main character's (Bartz Klauser) father. Kelger and Xezat were NPCs.