G.I. Joe: The Rise of Cobra
44 Achievements
PS3
Arctic Completed
Complete all Arctic missions
27.2%
How to unlock the Arctic Completed achievement in G.I. Joe: The Rise of Cobra - Definitive Guide
There are a total of 5 Arctic missions and one Special Operations Mission. Just finish all 6 of these and the achievement pops. Difficulty doesn't matter.
Story related, can't be missed
Self explanatory. Complete all story missions and side missions in the Arctic Arsenal section of the game. You may earn this trophy on the Causal Difficulty. This trophy will unlock after the Mission Select screen has loaded upon completion of the level/requirements. Here is a list of missions in Arctic Arsenal section of the game:
FOUNDATION
GENESIS
DECKHOUSE SIX
CLIFF'S EDGE
ROCKET HOUSE
ARCTIC OOZE - BONUS ALPHA