G.I. Joe: Operation Blackout
34 Achievements
Steam
Knowing is half the battle!
Get half of the game collectables.
8.0%
How to unlock the Knowing is half the battle! achievement in G.I. Joe: Operation Blackout - Definitive Guide
Tuffinz
This will pop in Mission 8 if you're collecting as you go.
See Now I Know for a video of all locations.
tuffmuff
This will unlock during Mission 8 if you're collecting as you go. Refer to Now I know! (30G) for a video of all locations.