In fact, there is only one very simple rule: shoot snipers through the windows of the fifth floor, so you will be safe and will not be under fire from all sides.

The screenshots below show sniper locations without the snipers themselves.

1. One of the snipers will be visible from the fire escape, which does not look across the road.














2. Another sniper can be killed by lightly climbing this fire escape.














3. From the same position, but from the other side, another sniper is visible.














4. Still on the same unfortunate staircase, another sniper is visible if you stand with your back to the wall.














5-6. On the opposite side, through the window through which you can see the fire escape, you can kill two snipers.














7. In the next room there is an doorway to the fire escape and a sniper is visible from there.














8-9. Two snipers can be positioned on the lower balconies close to the house, on the short sides of the building.













10. If you look out the main door to the roof, sometimes the target may appear there too.

So gradually you can shoot all the snipers and wait for the explosives to drop.

Yes, the screenshots are of low quality and not very informative, but publishing a guide consisting of just one line of text would be completely impolite.