Here is the full list of all 15 Dice World achievements.
Complete Chapter 1
Complete Chapter 2
Complete Chapter 3
Complete Chapter 3 with only companions
Complete Chapter 3 with Ghost Girl
Kill the boss in one turn
Kill 100 boss
Find hidden skills
Find 5 hidden skills in one game
Changing Skill Dice
Skill Upgrade
Create +5Reinforcement Skill
Create +3Reinforcement Strike Skill
Breaking Shop Signs
Use 10 skills in one turn