LEGO Marvel's Avengers
65 Achievements
1,250
33-41h
Xbox One
Xbox Series
Ultron Undone
Completed 'Ultron Undone'
20
25.0%
How to unlock the Ultron Undone achievement in LEGO Marvel's Avengers - Definitive Guide
Story related, can't be missed.
In Story Mode, complete the level "Ultron Undone" then the trophy will pop on the score screen.
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