06 Nov 2013 06 Nov 2013
Mission 18 - The Ghost Killer
Around mid way through you will destroy a couple of helicopters.
The last one will smash into the train, Run immediately up the left or right side and look down the side of the train where the ropes are and kill the 2 enemies before they reach the top - If you don't manage to, just Load last checkpoint. My footage went a little funny so I ended up with a failed attempt and 1/2 of the achievement :(