G.I. Joe: The Rise of Cobra
44 Achievements
PS3
It Takes Two
Complete any mission in 2 player co-op
48.9%
How to unlock the It Takes Two achievement in G.I. Joe: The Rise of Cobra - Definitive Guide
Mickey Burns
TrueAchievements
TrueAchievements
Either play a mission, any mission (Operation: Desert Jewel, Codename: Rise / a.k.a. "the second desert mission" is a good, short, and easy mission), in two-player co-op, or do like I did ... play the mission in single-player and press start on a second controller just before the mission ends.
If you chose this particular mission, right after the satellite part and right before you interact with the computer screen, press start on a second controller. Then interact with the computer to end the mission. Bingo, bango ... 10 easy points.
If you chose this particular mission, right after the satellite part and right before you interact with the computer screen, press start on a second controller. Then interact with the computer to end the mission. Bingo, bango ... 10 easy points.
RedEye420
It is local co-op only, which sucks. Simply have two controllers turned on when you select a mission and select "2-player Cooperative Mode" or press 
on the second controller during a mission when both characters are alive. You can only move a certain distance apart from each other and the camera can be bloody awful so stay close together and work as a team. I thought this game was much more fun with two players. This trophy will pop after loading the Mission Select screen upon completion of the requirements.