The Achievement is located in Mission 5 called "Siwa Oasis".
The Achievement has 3 different
ways to solve it and is also the last Optional Objective "Make his death look like an Accident" in Mission 5.
Before you climb up to the Scaffold, clear up the whole Map. The Game randomly decides who is the general of the three Enemies
. I'll show you all 3 Accidents completely. The Tactic is the same for all three, sneak behind him and wait until it has reached the end, then shoot at the explosives.
Picture of all 3 Accidents:
- Top General = Truck Accident01:39
- Left General = Scaffold Accident[02:53
- Right General = explosived Crate Accident