Ok time to finish this. Start by going east and at the northern side look west to find a soldier and another one on a higher path. Do not shoot them as they wear helmets, so you’ll have to CQC your way through this mission. Wait for him to give you his back, as well as the one on top. Once you’ve dealt with the one down here go all the way to the S and go down the hole behind the barrels (watch out for the hovercraft).
Follow the path until you find a POW, which you should FRS. Now, before continuing, look north through the hallway and equip your Surround Indicator. When you see the sound source of the hovercraft is to the northeast, quickly run towards the west into the open area. Go up the ladder to the south and up here you’ll find 2 soldiers and a hovercraft. Do not shoot it or you’ll trigger an alarm.
Hide behind the crate next to the ladder and wait for the hovercraft to leave. Now CQC the guard on the west side (next to the edge) then take out the one on the western side. Now go west to the Small Maintenance Dock .
Go north a little and you’ll see a yellow ladder. Go up this ladder (be careful of the hovercraft) and down the stairs at the end to find a POW. Now proceed west sticking to the northern wall and take out the soldier on this side. You’ll find another soldier in the central area. Ignore him if possible, move to the southwestern corner, go up the stairs and follow the path to get to your goal, the Rooftop .
Start by going north and follow the path. Take out the soldier here and go down the ladder on the southern side. Follow the path down here and go up the ladder on the north side.
You’ll find 2 soldiers up here, so use a follow-up CQC to take care of both of them at the same time (or lure one of them down the ladder and take care of him). Afterwards, go inside the building and go east in here to find a POW. Now go west and into the door to end the mission.