Teenage Mutant Ninja Turtles: Shredder's Revenge
30 Achievements
1000 XP
Epic
INEFFECTIVE!
Defeat the Rat King while using Splinter. Details for this achievement will be revealed once unlocked
30 XP
3.0%
How to unlock the INEFFECTIVE! achievement in Teenage Mutant Ninja Turtles: Shredder's Revenge - Definitive Guide
Necrophage33
The Rat King is the boss of Episode 5. So, if you've played through Story Mode with someone other than Splinter, simply replay Episode 5 as Splinter on Chill difficulty and beat the boss to unlock this achievement. Despite the achievement name, there are no disadvantages to using Splinter in this fight.
Mendel
The Rat King is the boss of Level 5, and for this trophy you will need to complete it while playing as Splinter. This can be done in any mode, and if you previously played through Story Mode with another character, you can just back out to the main menu, select Splinter and go straight to Level 5 for the trophy.