You'll start in a bar with Bowman and Woods at your side. Start by shooting down the first round of soldiers with your pistol and you'll soon gain an assault rifle. Make use of its attachments and iron sights to quickly get an edge over the enemy.
Move down the alley way and to either sidewalk. Don't remain in the center of the street or you may be plowed by on coming cop cars. You'll soon come to a car yourself which can be used to make your escape. Follow the on screen commands to start up the car and drive through the barricade.
After a cut scene, follow Woods and hook up to the line and travel down to the stronghold below. Woods and Bowman will kill the guards, allowing you to advance. In the first room sneak up behind the guard and melee him with your knife to score a clean kill.
Follow Woods' advice and stay down until the trucks and patrol move by. Once the coast is clear, get up and move up the hill. Take out all of the guards outside and then move inside. They will be waiting for you, so take cover and pop out to kill them one at a time.
You'll soon come to Castro's room where he will have a hostage. You'll have slow motion for a short time and will be able to score a clean head shot from your pistol. Afterwards, you'll need to escape. Move out the hall and assist Bowman with kill off the reinforcement. You'll move down to a lower level and will be swarmed by vehicles.
Grab the nearby grenade launcher and use it to take out the truck with a rapid fire turret. Afterwards, follow Woods into the sugar fields and into the escape plane. You'll be armed with a machinegun to take down the last of the guards. However, it will prove to be too weak and you'll be forced to man the heavy cannon on the ground. Help Bowman and Woods escape while you shoot down the Communist forces.