Here is the full list of all 46 Pixelot achievements.
Restore Myria to its rightful ruler
Reach level 40
Heal 5000 Damage
Defeat 20 Bosses
Pass the Sage's Trial
Complete 10 Quests
Collect 10,000 Gold
Escape from the sewers
Deal 1000 Damage with 1 attack
Protect 20 Allies in combat
Reach level 30
Collect the Shadow Crystal
Defeat 40 Unique Monsters
Collect 10 Heroes
Defeat 500 Monsters
Reach Level 20
Defeat the leaders of the mercenary band
Deal 200 critical hits
Upgrade an item to +3
Collect the Earth Crystal
Upgrade items 20 times
Reach Level 10
Complete the Ranger's Trial
Collect 100 Items
Defeat the Tower King in the Dark Tower
Reach level 50
Reach Level 60
Reach level 70
Reach level 80
Reach level 90
Reach level 100
Collect the Water Crystal
Collect the Storm Crystal
Confront the Orgo Chief
Explore Mt. Magmor
Clear Arena Challenges
Promote 10 Units
Defeat Prisma
Confront the Great Yeti
Collect the Light Crystal
Traverse the Hidden Grotto
Collect the Fire Crystal
Defeat the Dark Lord
Clear the Labyrinth
Collect the 6 Legendary Weapons
Defeat Prisma II