Here is the full list of all 20 9th Dawn II achievements.
Complete the game
Get 1,000,000 Silver
Kill 5000 enemies
Collect 5 Crystal Beans
Kill a Dragon
Drink 200 potions
Kill 1000 enemies
Find plenty of treasure chests
Let a summon kill a boss
Become over-burdened
Cast a summon spell
Cast a healing spell
Kill 100 enemies
Unlock your first spell
Find all locations
Kill a boss with 10% HP remaining
Kill the Hydra Dragon
Unlock all spells
Talk to 100 NPCs
Collect 100 items in your bank