True angel achievement - ♥♥♥♥♥?

[Fireinthelol]

No matter how careful I am, I always seem to lose 1 or 2 civilians even in the first mission, I generally stay the hell away from the cars taking civilians and shoot them down - what the hell am I doing wrong?
If anyone could please give any tips on how to do this achievement, that would be very helpful!

[Dean Demon]

Just got this achievement today, mining the camp area is a good tactic

[Ambiguous Assassin]

It's tricky I know, try to stay away from the area where the civilians and trucks are, so you don't shoot or run over them as they run back to the walls. Coincidentally, I tried it again today after a long pause - and did it!