Move from cover to cover and engage the enemies. There will be enemy mortars around here so don't go running around in the open. Fight your way towards the hacienda and once you reached it, you have to take out the MMGs. You have to get close enough and lob a grenade or use high-powered weapons to destroy the weakened structures of the towers to destroy them. You have to aim and make sure the grenades get inside the towers. If you don't have grenades, you should have your Overkill meter filled up by now so let loose and rain lead to the towers to demolish them.
After the scene, head to Bravo's position and kill enemies along the way quickly. Once he's rescued, dig in and repel the enemy's assault. Rescuing Bravo should replenish a good chunk of your overkill meter so use it when you have the chance to take out the enemies around you.
Once clear, head inside to complete the section.