Similar to mission 2, you can’t attack enemies as you please. Most locations have respawning enemies, so you got to play it smart. However unlike mission 2, most of these spots are easily transversed with simple tactics.
You’re going to want the PE4 charges for the HVT and something extremely accurate. This is because missing a shot, can cause things to go to hell fast.
From the start, head down the back left path. Continue down this path till you encounter an enemy.
Here you can see the three enemies that need to die. There is a RPG/Sniper, so make sure to avoid him. I found that you can try to do it stealthy, though opening fire and waiting it out is quite easy.
After the previous section, you will see some C4 here. If you want to go stealth, you will need to plan ahead for it. If you just killed everyone, then simply disarm it and progress.
Before entering the next area, you will need to kill this guy. He is behind where the RPG/Sniper is, so I strongly suggest killing him prior to this.
Follow the way point till you hit this room. Unlike a lot of area, this part is pretty tricky. You basically need to shoot that sniper, then the two guys in front of me. Once the area is clear, look at the stage (left) where around three enemies will spawn. Once the enemies are dead, run in the room and kill the other two snipers. One is on a ledge in the middle and the other is exactly where this sniper is, but on the other side. Most likely two enemies will spawn in the middle, so kill them prior to progressing.
Before the next area with enemies, you will encounter these three C4’s. It doesn’t matter how you deal with the first two, but the last one needs to be disarmed.
There are two enemies in this room and a sniper up above. Considering it’s a low threat area, move back then shoot the C4. This will alert everyone, though you can easily pick off the two in the middle. Once they’re dead, head up the stairs.
Slowly progress up, since you can quickly kill the RPG guy. If you wait a little bit he will lose interest and look elsewhere. Pick whichever method you think is better.
Shoot this C4 and get ready for all hell to break loose.
Quickly kill the RPG guy inside (hes the one on the floor), but don’t enter. The guy on the other side of the wall is the HVT, but the room has enemies constantly respawning. The HVT also has a shotgun, so you can die in a second. While he sounds dangerous, if you get a well placed charged, you can simply blow him up. If you have no luck with that, rush the room when its safe and try to kill him.
After the HVT is dead, quickly make it to the exit. Outside of this C4, you can simply run to the end. This a pretty cool mission and was where I earned my platinum.