In A Volatile Situation the casino is under attack. It’s worth topping up your armour and picking up some decent weaponry, like the AK47 before you start.
Watch the map to see which direction the Sindacco’s are coming from and keep on the pavement to avoid getting run over by them when they attack. Move quickly to stop them from planting the explosives and pick up the free ammo that they leave behind.
For the final part of the mission, you’ll need to drive away the booby-trapped van. You only get 20 seconds to get it clear of the casino so don’t waste any time getting in. It’s painfully slow, but keep an eye on the safe distance indicator and make sure you jump out in time to complete the mission.