Here is the full list of all 29 Shattered God - there are Quest for the Divine Relic achievements.
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 all 3 minigames
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 Samuel
Recruit Karol
Recruit Nightshade
Have maximum affinity with Anne
Have minimum affinity with Anne
Have a party member leave you
Get in a battle with 4 or more enemies and win
Score 4 critical hits in a row
Cancel 4 spells on the same battle
Hit enemies first 4 times in a row on the map
Reach level 30
Have 40 Strength
Have 40 Endurance
Have 40 Dexterity
Have 40 Intelligence
Have 40 Wisdom
Have 40 Agility