G.I. Joe: The Rise of Cobra
44 Achievements
PS3
Side Mission Completist
Complete all Sub-operation Missions
13.9%
How to unlock the Side Mission Completist achievement in G.I. Joe: The Rise of Cobra - Definitive Guide
For this achievement you have to play through the extra or sub-mission that becomes available after you complete the tundra level. You have to play with COBRA opperatives, it doesn't give you a choice to do anything but and its not terribly dificult on casual difficulty. I played through with barroness and the guy with the silver head and had no problems.
Good Luck!
Good Luck!
You can only unlock this trophy AFTER you beat the game. You will unlock the final bonus mission after you complete the final story mission. This trophy can be unlocked on Casual Difficulty. This trophy will pop after the Mission Select screen has loaded upon completion of the requirements.