Here is the full list of all 32 DragonFangZ - there are The Rose Dungeon of Time achievements.
You stepped into the Tree of Time
You talked with the Mysterious Keeper
Annerese became an inhabitant of the Tree of Time
Amon became an inhabitant of the Tree of Time
Gosume became an inhabitant of the Tree of Time
Lohen became an inhabitant of the Tree of Time
Hannibal became an inhabitant of the Tree of Time
You have defeated Frey
You have defeated Apollon
You have defeated Artemis
You have defeated Nameless King
You used the weapon's Brave skill
You have seeked advice from all the inhabitants
Obtained King Metalbow database
Obtained Phoenix's database
Obtained Hades' database
Obtained Troll's database
Obtained Imperial Elf's database
Obtained Ancient Golem's database
Obtained King Orc's database
Obtained Emperor Cockatrice's database
Obtained Reaper's database
Obtained Ibaraki Douji's database
Obtained Grudge NineTails' database
Obtained Kerberos' database
Obtained Chakram dancers' database
Obtained Golden Fairy's database
Obtained Scura's database
Obtained 178 monsters' databases
You saw the ending
Clear all Fairy's Garden stages
Clear the Dragon's Abyss