Here is the full list of all 29 Shattered God - there are Quest for the Divine Relic achievements.
Have maximum affinity with Anne
Have 40 Endurance
Beat all 3 minigames
Cancel 4 spells on the same battle
Have 40 Strength
Get in a battle with 4 or more enemies and win
Recruit Samuel
Hit enemies first 4 times in a row on the map
Score 4 critical hits in a row
Get all Achievements
Acquire all Artifacts
Acquire all Spells
Acquire over 5.000 Gold
Open all the Common and Rare chests in the game
Beat the Abyssal Tower
Beat the game reaching ending A
Beat the game reaching ending K
Beat the game reaching ending N
Complete all sidequests
Complete all the monk's challenges
Recruit Karol
Recruit Nightshade
Have minimum affinity with Anne
Have a party member leave you
Reach level 30
Have 40 Dexterity
Have 40 Intelligence
Have 40 Wisdom
Have 40 Agility