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