Change Of Priority

[Soldier 4 I AM]

I have tried to get this achievement around 10 tries now and I think that i am missing something very easy. When I get to the area where the chopper is at and it takes off. I wait till the guard talk and walk there different ways. I go left out of the hatch door I was hiding behind and go behind the medal (red/Rust) colored container. There is a guard that stops his patrol at the end of this container. I try moving after he leaves but then one of the guys saying “Go loud” or something like that. When I get through the other area where the 4 hostages are they are all dead. Could someone make a step by step guide or even better a video for this achievement.
Even better if someone is real ambitious make a video/guide for Deal Breaker, You cousin dances naked, and Out of Sight. I know there is one for the mine, but I know there is a lot of people who could put them to use. If I should figure it out on my own ill write up a detailed guide for these achievements

[Chuppernicus]

Took my buddy and I a few tries as well. We went silent mostly; him with pistol and me the sniper rifle. I usually grenade the first 2 guys near the chopper at the start after it flies away. Then just go thru the level and take a right at the next set of guys I believe and then make your way to the hostages. I came around a courner and had guys walking across my path to the right, go that direction using silent kills. You'll then be led thru a bit more ship an into an open area I believe.

Just don't shoot the hostages like my buddy. When you're in the area with the hostages just aim high and let the guards see you to draw their fire. The 4 guys should run into a small room where there is an ammo case. After killing the guards the general will come on the radio and says something, achievement unlocks then.