Here is the full list of all 50 Machina of the Planet Tree -Unity Unions- achievements.
Clear mission "Corona the Jewelmancer!"
Clear mission "The Machina Awakens"
Clear mission "A New Power"
Clear mission "Confrontation with the Elder Dragon!"
Clear mission "Shadows of Glory"
Clear mission "The Magician Known as Corona Megistos"
Clear all missions on Easy difficulty
Clear all missions on Normal difficulty
Clear all missions on Hard difficulty
Clear all missions on Very Hard difficulty
Clear all missions on Extreme difficulty
Clear all missions on every difficulty level.
Defeat 100 enemies
Defeat 300 enemies
Defeat 1,000 enemies
Defeat 5,000 enemies
Defeat 10,000 enemies
Do 100 damage
Do 2,000 damage
Do 10,000 damage
Do 20,000 damage
Do 50,000 damage
Raise Corona's HP to 500
Raise Corona's HP to 1,000
Raise Corona's HP to 2,000
Raise Corona's HP to 5,000
Raise Corona's HP to 10,000
Raise a minion to level 2
Raise a minion to level 10
Raise a minion to level 30
Raise a minion to level 50
Raise a minion to level 99
Craft a staff for the first time
Use 200 or more ES during a single crafting
Use 400 or more ES during a single crafting
Use 800 or more ES during a single crafting
Use 1,400 or more ES during a single crafting
Use 1,800 or more ES during a single crafting
Disassemble a staff for the first time
Disassemble 5 staves or amulets
Disassemble 20 staves or amulets
Disassemble 50 staves or amulets
Disassemble 100 staves or amulets
Disassemble 300 staves or amulets
Obtain a staff for the first time
Obtain a level 10 or higher staff for the first time
Obtain a level 30 or higher staff for the first time
Obtain a level 50 or higher staff for the first time
Obtain a level 70 or higher staff for the first time
Obtain a level 90 or higher staff for the first time