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Agency Jeep
After you kill the man on the boat and finish the mission, you will get the agency jeep.
Bald Eagle Persuader Boat
There is a boat that looks oddly like the Gungan submarine in Star Wars Episode 1. It is called the Bald Eagle Persuader. It travels ridiculously fast on water. If you drive it in a straight line for long enough it takes off and wings grow from the side. When you land it, wheels pop out underneath. It is very difficult to control. It appears about one in every ten visits to the mansion near a safehouse. it cycles in this order: sea, air, land. If you go from the air to the sea it will just explode.
Boarding the President's plane
When you are flying the jet in the final level, fly over the top of the plane. Try to hover over one of the wings or the front of the plane (recommended). Quickly jump out of the jet and let go. If done correctly, a "Jump to vehicle" icon will appear. Quickly press A and he will grab on and you will immediately appear in the plane.
On the last mission you will be in a jump jet and other planes will follow you. Go towards the Presidential plane. Fly straight into it and bail out above the wing. If you touch the plane you board it. When on board, kill the black hand and go towards the door. You will begin falling . Fly towards Mendoza and tap X to start an intermission sequence where Rico puts a bomb on Mendoza. Mendoza explodes then Rico says "He always wanted to spread his spirit; and now there's pieces of him everywhere!". You will respawn at Mendoza's mansion and the game will end.
Cool Planes
The planes aren't just in the airports, they're in the military bases. You get fast jets and planes with weapons in the military bases.
Enter Agency heavy drop helicopter
After you call for a heavy drop or an extraction, a big helicopter should fly over. When you see it, fire your grapple gun at the helicopter. If you hit, you should be attached. Pull yourself in. You must get very close then switch weapons to let go. You should land next to the helicopter door. Once done, press Triangle to get in. This vehicle is indestructible, but you are not. You can still die but the helicopter will always stay intact.
Fall And Not Die
When you are high up in the sky in a plane, jump out and hold Down. You should land on the ground, do a forwards roll, then be okay. This works best if you land on a deep slope or bumpy hill.
Fix Your Cars
Head to a safe house in a car/bike/van which is quite beat-up. Place in the garage and walk away until you ear the door close. throw a grenade in the air (L1), target it (L2), and shoot it in the air(R1). when it blows up in the air, turn back to the garage, go inside and your vehicle should have been repaired - Note - may require more than one explosion.
Garage won't Open?
Having trouble opening your garage at your safehouse? it's easy, just explode it with a C4, but then when the garage opens.. your car will be trashed. so, just throw a grenade and run backwards until the garage door closes,(be a fare distance, you may lose health!) wait until the explosion and.... Hey presto! brand spanking new car! (note this cheat only works if you RESTOCK your C4's)
Grapple hook
After Level 2 there are territories you can take over. Once you have done about three of them you will get the grapple hook.
Helicopter
When you get your grapple hook fire it at a passing or attacking helicopter. Then, just reel your self in.
Taking over sites
Use the following trick when you are taking over a village with the guerrillas. Ignore most of the enemies and charge towards the roadblock the government has up. Destroy it using grenades, a rocket launcher, or timed explosives. Do this to each one, and the "Capture enemy flag" objective will soon appear. Run to it and press A to conquer that area. For other villages without roadblocks, such as the towns when a police car with a turret on the back appears, go in it. One of your teammates will also enter. Drive down street and your partner will kill everyone. Then, capture the flag when instructed. Do not open fire on anyone on your team or they will kill you.
When taking over Guerrilla and Rioja sites, use your heavy drop in your PDA. Choose the truck and just start shooting your way through the entire thing until you have to take the flag at a Guerrilla site or kill the head honcho at a Rioja site.
Unlimited grenades
Press Circle, X, Down, Up, Left, Right during game play.
Unlimited health
Press X(2), Up(2), Left, Right, Left, Right during game play.
Unlimited life
Press Up, Down, Left, Right, Up, Down, Up, Down during game play.