Just Cause

If you liberate/take over two or three neighboring areas, you can get to level five by destroying any non-allied cars (civilians) that come into your area. It takes about 5 minutes to get there. Afterwards, pray to your mother that they can't get into your areas and keep killing off civilians for five minutes. If you're in a block of liberated counties you should be safe for 5 minutes.

Request extraction to Camp Grouper - Agency 02. Go to the dock and get in the highspeed "Bald Eagle Persuader" boat . Turn right and stay along the coast. You'll soon pass a town on your right, and then come to a bridge. On the right hand side of the bridge is one of the coca boxes for the collection mission. On the left hand side is an army base, and you will suddenly find yourself on the highest Most Wanted level. Helicopters and a police boat will be shooting at you. This next part is critical ... drive in a circle for 5 minutes and you'll get all of the Most Wanted achievements. Um, that's it. The only complication is that sometimes you might ram the police boat. I couldn't see that this was causing any damage.

To get the Most Wanted achievements (for 1, 2, and 5 minutes surviving at a Level 5 Wanted Level), you have to remain hidden, but retain aggro so that the wanted level doesn't dimish over the course of 5 minutes.

A good place to do this is here:



Note where the Black Arrow is, which represents the player. It's about halfway south on the map, and all the way east. There's a set of small islands with a bridge there and an unmarked military base. As you approach it, you'll see 3 Red Squares with black filling, which you'll learn are Surface-to-Air (SAM) Missile turrets, so you don't want to go there with a helicopter. Either take a boat or a car to that location.

Once you get to the bridge as you approach that set of islands, your wanted level will jump to 5 and you will quickly get persued. What you want to then do is get down to the beach, which always reduces the amount of enemies that chase you, and press yourself against the coastal wall, to block out the gunfire from the helicopters. You'll continue to aggro the choppers, maintaining your wanted level, but you won't be taking damage from them, allowing you to endure the time.

You may get a soldier or two onto the sand, and if you like, you can cautiously peek out and kill them if they're a nuisance.

I've created a video showing the process.