- Underground Base

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Metal Gear Solid 4 Guide - Act 4: Twin Suns

Underground Base

Head to the end of the corridor and crawl through the small vent where the wall meets the floor. Don't do anything dramatic when you exit the vent as there is a lone Dwarf Gekko in the area. Wait for it to move to the right then leave your position and follow it. Watch out for the vents in the floor! Use the right hand wall for cover and wait on the corner, looking around it to monitor the bot's position.

Follow the Dwarf Gekko once it moves up the steps

It will jump up the first set of stairs. Don't follow just yet as it will scan behind it and may catch the top of your head if you're too close. Allow it to begin to move up the next set too and head left, then right. Wait for it to move to the right and for the beam near the exit (to the left) to move away, then sprint to the door. Turn inside the door and head to the exit at the end. You won't be able to escape if you're in alert mode, so be careful or you'll have to fight off an army of Dwarf Gekko (not particularly hard, just tedious!).
 
(Cut Scene 11, Length 03:16)