Here is the full list of all 29 Gale of Windoria achievements.
Obtained the Diamond Quartz Crown.
Defeated 1,000 enemies.
Obtained the Proof of the Toy King.
Strengthened 30 Quartzes to their maximum level.
Unlocked all story quests.
Unlocked 70 story quests.
Obtained 100 types of Quartzes.
Unlocked 65 story quests.
Unlocked 60 story quests.
Strengthened 20 Quartzes to their maximum level.
Unlocked 55 story quests.
Defeated 500 enemies.
Unlocked 50 story quests.
Obtained the Lucky Cat.
Unlocked 45 story quests.
Unlocked 40 story quests.
Unlocked 35 story quests.
Strengthened 10 Quartzes to their maximum level.
Obtained 50 types of Quartzes.
Triggered 3 Quartz Bonuses at once.
Unlocked 30 story quests.
Unlocked 25 story quests.
Defeated 100 enemies.
Unlocked 20 story quests.
Obtained 25 types of Quartzes.
Unlocked 15 story quests.
Unlocked 10 story quests.
Unlocked 5 story quests.
Triggered 1 Quartz Bonus.