There are also other tricks like moving the wheelbarrow up the ladders or up the elevators to stun the guards as they go up. Or slide the bags down the slopes to overwhelm the guards.
And, again, thanks for the video.
I read about the wheelbarrow thing in the readme or somewhere and finally managed to do it in Strikes Back last night : D--thought at first it meant leaving the wheelbarrow over the ladder/elevator shaft but found you can't drop it there, so instead you just hold it there while they come up. : ) And yep after recording I watched your demo video all the way through and saw you slide a bag down a slope and was like ohhhh ^ _^