With time you learn where it's safe and where you need to keep your head down. Throw a grenade into the towers whenever you get a chance, easy kill.
Yeah I know, I already did a triple kill about two days ago with one granade in one of the towers. Is so awesome seeing those bastards falling from the tower one by one.
This map though really expect you to pick up the sniper and stay there or move around a lot with the most explosive weapons you can use at your advantage (and climb like a motherfucker). The best kickbacks for the Yemen map are the Cluster Bomb and the RPG.
I'm pretty excited to be able to use the kickback with the spiders, and I hate spiders.