Full list of all 35 Monochrome Order achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox One.
Cleared the ending "An Organization in Pieces."
Fame has risen to 30 or higher.
Tempered a weapon to Lv. 50.
Gained 10 party members.
Completed 30 Judgments.
Won 250 battles.
Gained 7 party members.
Completed 20 Judgments.
Tempered a weapon to Lv. 35.
Tempered a weapon to Lv. 15.
Won 100 battles.
Won 50 battles.
Completed 10 Judgments.
Gained 5 party members.
Completed 3 Judgments.
Gained 1,000G.
Gained 3 party members.
Won 10 battles.
Fame has fallen to -30 or lower.
Peace has risen to 30 or higher.
Peace has fallen to -30 or lower.
Economy has risen to 30 or higher.
Economy has fallen to -30 or lower.
Gained 100,000G.
Gained 200,000G.
Defeated Calamititan.
Defeated the Betrayer.
Defeated Anarchaos.
Defeated Despair Dragon.
Defeated all boss enemies.
Cleared the ending "A New Order."
Cleared the ending "Divine Enemy Protector."
Cleared the ending "Inevitable Destruction."
Cleared the ending "Dragon's Pardon."
Cleared all endings.