Metal Gear Solid: Peace Walker/Contact the Sandinista Comandante

The enemy is moving nukes up to their base somewhere in the mountains at Volcán Irazú. The CIA mercs, along with something that called itself "TJ-Chrysalis 6000," are also converging at "point 500," the location of the FSLN comandante who can provide Snake intel to reach the base at Irazú.

Infiltrate through the jungle and rescue the FSLN comandante at the boathouse on the Río del Jade.

Mission Prep
On an initial run, only Snake may participate in this mission. You should strip him of any unnecessary equipment. To do so, highlight an item with and press  to remove it. You can also press to open the weapon or item selection. Remove everything. The less weapons you carry, the less weight you carry. Weight decreases running speed and Camo Index. The top two slots on the right column are Primary Weapons. Equip the ★2 Mk.22 as your top primary weapon. Grenades or mines are your Secondary Weapons, or the bottom four slots. There's no need for any Grenades as they draw too much attention. For your items, you only need the ★1 Fulton Recovery System but it is also suggested that your top item be the ★1 Surround Indicator. Bring any other items you want; only weapons increase your weight. Once you are satisfied with your loadout, go ahead and start the mission.

If you haven't upgraded the ★2 Mk.22, go back to R&D and allocate the funds and complete Extra Ops [010] Fulton Recovery.

El Cenegal: Jungle
You start at the base of a tree in a clearing dominated by a stalled cargo truck with its front toward you. The path behind you presumably leads back to Puerto del Alba, but it is inaccessible. The path northeast with the Bullets leads to Rio del Jade and this mission's goal. Bafflingly, it is also inaccessible. The cargo truck's driver - Soldier A - stands southeast of it next to the driver's seat, surveying the north side of the map without patrolling. His counterpart - Soldier B - has a triangular patrol route to the northeast of the truck.



Soldier A is always a C Rank R&D Soldier and should be neutralized and extracted. Then, you'll need to sneak past Soldier B once his back is turned.

Run up to the front passenger side of the truck. Gently turn to face Soldier A and walk up to him until the CQC icon appears. Press and hold to Restrain him, then tilt the  to Throw him behind you.
 * 1. Move to Contact With Soldier A; Neutralize and Extract Him.:

Press and hold and press  or  to highlight the ★1 Fulton Recovery System, then release  to equip it. Stand over Soldier A and press to extract him out of the map and send him to Mother Base.

Once Soldier A is extracted, get low by pressing and move to the passenger side of the truck at Point 2. Press yourself against the rearmost tire, align your line of sight onto Soldier B behind the truck and hold to zoom in on him. Once he has walked out of your line of sight, it is safe to get off the truck and run straight to the northwest exit to the next area.
 * 2. Hide From Soldier B, Then Bypass Him.;

El Cenegal: Ravine
There are no enemy soldiers in this area. The northern bridge over the ravine is blocked off during this mission. There is a Ration and an ammo pickup in this area and you can restock if you need to.

El Cenegal: Swamp
This is the southern bank of the river; the northern bank is only accessible in later missions. There are three guards here, two of them at the bank, with Soldier E to the south concealed by the foliage and terrain.

This area is tricky because of the tight quarters and the interlocking enemy lines of sight. Soldier C is patrolling along the grounded boat on the riverbank to the north. Soldier D is stationary next to a tree facing to the south. His line of sight sweeps from west to southeast. Soldier E is patrolling from the southern edge of the map to the tree next to the eastern exit to Río del Jade.



Crouch with and run to the west side of this tree, trying to keep the tree between you and Soldiers C and D; you might accidentally enter Soldier D's line of sight if you're not careful. Press up against the tree by holding the. Don't worry if you stick out; as long as you're pressed against one side, you are hidden from anybody on the opposite side. Do not press the Attack Button to knock. Soldier C's patrol will take him up to the other side of this tree. Wait for him to turn around. Watch Soldier D and make sure he's not looking at your direction before releasing and moving to the ammo pickup north of the boat. Try to keep some distance between you and the other soldiers. Once you reach the ammo pickup, press and hold the to lie down. Try and position yourself so that the boat conceals you completely. Alternatively, once you reach the ammo pickup, put on the ★1 Love Box if you bought it. Now, watch Soldier C and Soldier E. Your time to get up and run is when Soldier C was walked behind you and Soldier E has turned and is no longer facing your direction.
 * 1. Go Down to the Water's Edge
 * 2. Hide Low Behind the Boat

Get up, take off the ★1 Love Box, and hug the water's edge and move to the western exit to Río del Jade.

Río del Jade
This is the location of the boathouse, the "target 500" mentioned by the radio operator in the previous mission. The enemy has formed a cordon in anticipation of an assault team that will show up in the next mission. The 6 soldiers surround the boathouse with their lines-of-sight interlocking around the center of the map. To complete the mission, you must neutralize all of them; you cannot ghost your way into the boathouse. In order to neutralize every enemy here while maintaining stealth, your approach will have to be a counter-clockwise path around the edges of the map. All you need to do is move to each point and use the Mk.22 to anesthetize each enemy soldier as instructed. If you're comfortable with the gunplay, try to go for a headshot to save your ammo and suppressor. If not, turn on Auto-Aim and make sure each soldier gets shot 3 times in rapid succession to ensure they are neutralized. Since you must neutralize them, you may as well extract them. Equip the ★1 Fulton Recovery System, and extract neutralized soldiers immediately; you won't get another chance to sweep the map after each soldier is neutralized. All enemy soldiers are focused on the center of the map, so don't worry about any soldiers finding their sleeping buddies.



If your Mk.22 is less than ★2, your suppressor will run out during this segment and it may take more than three shots to neutralize soldiers with the ★1. Don't miss your headshots.

Move to point 1. Get down and Aim at Soldier G. Take him out with the tranquilizer. Don't extract him immediately. Angle the camera to your left at Soldier F who should have his back turned. Move south until your line of sight is clear. Aim at him and put him down. Extract both if you want to. Reload your weapon and move to point 2. Press yourself against the short side of this lumber stack and watch Soldier H until he is no longer facing your direction. When he does, step past the corner of the lumber stack so your line of sight is clear and put him down. Extract him and move to point 3. Move to the west side of this stack of containers and watch Soldier I, who should be in front of the building. Soldier J on the observation post above you won't be able to see you this close (think of surveillance cameras in earlier Metal Gear games), but remain mindful of his presence. When Soldier I is not facing your direction, step around the corner, sight in, and put him down. Do so before he's moving to the other end of his patrol route if you want to avoid Soldier H's sight. Extract him. Go around the south side of the southernmost shack with the ammo pickups inside and climb the ladder up the observation post. There's no need to snipe him, just let the analog stick go as Snake is reaching the top of the ladder. If you stay perfectly still, you can be right next to the soldier and he won't react to you. Just hold down Aim to execute a Hold-Up, which will neutralize Soldier J. Extract him. Go ahead and hop down from the ladder; there shouldn't be any enemies nearby to hear you hit the ground. Finally, move to this container when Soldier K isn't looking. If Auto-Aim isn't engaging, move closer. Make sure your line of sight is clear, aim at Soldier K, and put him down. Extract him.
 * 1. Neutralize Soldiers F and G
 * 2. Neutralize Soldier H
 * 3. Neutralize Soldier I
 * 4. Neutralize Soldier J
 * 5. Neutralize Soldier K

Once all six soldiers are neutralized, there is nothing more you can do but wait. After a few seconds, the screen will fade to black and some cut-scenes will begin. Be prepared for a unique quick time event in which you need to use the to aim a weapon in first person. Press to fire. You'll need to destroy 2 smaller drones before firing at a larger target before you can skip past the following cut-scene.

Completion
The ghost run, even if you skip the cutscenes, will likely not get you an S-Rank. An S-Rank walkthrough is forthcoming.

Rewards:
 * ★1 LAW is developed
 * ★1 M1911AI Design Specs

With the ★1 LAW, ou'll only have 16 shots; Mother Base cannot create more ammo for the LAW until you the R&D team reaches level 10.