Amazing Superhero Squad (UP)
20 Achievements
PS4
The Rat King
Fail rat invasion mission
24.1%
How to unlock the The Rat King achievement in Amazing Superhero Squad - Definitive Guide
SEEPAGE ix
TrueAchievements
TrueAchievements
You need to fail the "Rat In The Elevator" mission. It appears randomly as I've had it show up in the 1st and 3rd acts. To guarantee a fail, don't assign anyone to it and just fast forward (LT) to the end of the day.