Metal Gear Solid: Peace Walker/Investigate The Supply Facility

Bosque del Alba
The mission proper begins here. From this point forward, the mission timer is running. There's no reason to go back to Playa del Alba.

Press to open the Start Menu and consult your map. You should consult your map every time you enter a new area.



There's also no reason to interact with any of the enemy soldiers; the best path avoids them altogether. Simply move north and turn east before you move into the northern alcove with the Grenades. Keep moving east until you reach a small ledge after a fallen log.

Tap to roll up the ledge or just run against it to make Snake climb it automatically.
 * 1. Remember Your Training

Keep moving east until you reach a small series of ledges and turn north. As you approach a fallen log with Soldier C nearby, gently turn northeast to reach the next area.

Puerto del Alba
The supply facility from where Paz escaped is here. Security is tighter than in the Jungle; there are three enemy soldiers patrolling the staging area and a fourth up the stairs of the admin building to the east edge of Puerto del Alba. To avoid detection, you'll need to stop and watch enemy patrols for the coast to be clear before moving forward. Move past the fence and turn north to start.



Consult your map. You'll want to keep the camera pointed to the east as you go past the gate and turn north to the first set of containers. There, move to the northeast corner of the container.

Face the corner until an Action Icon appears. Press and hold to press Snake against the container. Then, press and hold to zoom the camera onto Soldier E and watch his movements. Watch him turn around and walk south and out of your line of sight. Get off the container.
 * 1. Wait for Soldier E.

Round the corner and move east in a straight shot to the east-most container. Try to follow the yellow line on the ground. The staircase up to the admin building should be straight ahead. Soldier E should be out of earshot as you move.

At this point, press yourself against the corner with and observe Soldier G up on the patio of the admin building. Watch him until he passes the staircase. One he does, you can get off the wall and move straight to your goal.
 * 2. Wait for Soldier G.

The graphic novel cutscene will have interactive elements, so watch for the button prompts. Press to engage the radioman. Mash to submit him. After a brief interrogation, Snake will get distracted and you'll have to press again to throw the radio man into a stack of boxes and follow up with a  to hit him with the Stun Rod.

QTE Sequence, TL;DR:  →  →  →

Completion
If you followed the instructions, you should get an S-Rank even if you viewed all the cutscenes.

Rewards:
 * CO-OPs message "Here" is infused with heroic spirit.
 * M1C Design Specs RANK 1
 * Smoke Grenade Design Specs RANK 1

You should check out the Building Mother Base guide and begin Extra Ops [010] Fulton Recovery before moving on to the next mission.