You only have one mission in this set, the final one in the game:
You need a quick car for this, so find one before heading to Catalina's. Once you get there, you will have your money and weapons taken away and be brought in to see Catalina. She has betrayed you yet again, and you need to escape the clutches of her guards. Take the gun off the guard that was knocked out in the cut scene and head towards the mansion.
You will have lots of guards to deal with but should be able to pick up an AK-47 on your way through. Steal the Cartel Cruiser from the garage and use it to get to the gate. Once clear, follow the objective until you get to a road block of enemy Cruisers. Get out and kill the inhabitants, then take the car that's closest to the hill and continue driving. You should be able to make the next blockade of Cruisers explode by shooting at them, after which you should take the M-16 that is left and mop up any other enemies.
Head up the ramp into the building and clear the area. After the cut scene, avoid the Barracks OL truck by going upstairs and continue to take out all the Cartel members. Head back down to where the Barracks OL is and take the flamethrower that's nearby. Back upstairs you will find Maria. Once you clear the Colombian from the tower in the center, and the helicopter has been taken out, the mission is complete.
Reward: $1,000,000