Assault Heroes
12 Achievements
4-6h
Twin Medal
Finish a zone in Co-op mode.
45.4%
How to unlock the Twin Medal achievement in Assault Heroes - Definitive Guide
Be sure to use all your nukes and grenades on final boss if you are having trouble.
Can be done online or offline with 2 controllers.
OFFLINE STRATEGY: Offline can be tricky since both players share lives. If controller 2 depletes the lives then either player's death ends the level. However, I found it VERY easy to obtain this trophy in Zone 3 (Areas 8-10). Rubberband controller to to move up constantly and playthrough the level normally. When you reach the boss, move the 2nd player to the top-right of the screen. I lost only 2 lives with this method.
You can get this achievement by playing any zone cooperatively. Both players must remain in the game from start to finish for the achievement to unlock. This achievement can be unlocked on any difficulty.