The name "Out of the Shadows" refers to Green Shadow's name. Alternatively, it could also be a reference to the 2016 Teenage Mutant Ninja Turtles movie with the same name.
Being part of the tutorial quests, this one should not be of any difficulty to you. Simply go along with the tutorial, and you should win.
- There is a bug where this achievement cannot be obtained on Google Play Games, even if the player finished the quest.