G.I. Joe: Operation Blackout

This can be really annoying! I recommend playing the mission on easy just to complete it and unlock modifiers. Replay the level on any difficulty with modifiers increasing your damage and health. I used Duke for this achievement. Storm shadow appears three times to try and steal the fragment. First time he runs at you as your coming down the temple steps. He goes down quick here. Second is in the long pathway after the waves of enemies. He runs straight at you and goes down with a few shots. The problem is the third time when he spawns close to you after going down some steps. Don’t bother with an ultimate because it freezes you in place, just keep back pedaling and shooting and don’t get caught on the walls.

I suggest doing all mission specific achievements on easy and/or with modifiers for a quicker completion. The boss appears 3 times and if he hits you, you will drop the mold. You can just melt him with the modifiers but it's easily done without them in easy. He appears on the stairs, the straight away, and going down the stairs after the 1st boss battle. Just back peddle when you hear him talk and you will see his big dot on the mini map. Hit LT to lock on when needed and just fire until he disappears all 3 times.