1. Locate gift in Mason’s state room
After exiting the interrogation room and encountering the first enemies ion the hall outside, duck into the room to the right. Look on the desk and interact with the document here to complete the challenge.
2. Incapacitate enemy personnel (x20) using Combatant Suppression Knuckles
In the first room of the level, you will see a box on the wall that you can access. Open this for the combat supression knuckles, this will replace your knife as your melee weapon. kill 20 enemies with the knuckles over the course of the level to complete the challenge.
3. Provide sniper overwatch for SEAL team advance across flight deck
During the first part of the mission, after trying to disable the security systems, you will head outside to a balcony area where you will see friendly troops firing at enemies down on the deck below. Grab a sniper rifle from nearby and help them eliminate all the hostile forces below to complete this challenge.
4. Eliminate enemy personnel (x10) with security turret
When you reach the area where you can hack the security turrets, do so and use them to kill 10 enemy soldiers to complete the challenge.
5. Destroy security turret (x3) while disabled
Hit a turret with an EMP grenade and whilst it is short-circuited destroy it. Do this thrice to complete the challenge. There are a number of these throughout the mission so you should have no trouble knocking three of them over!
6. Eliminate airborne enemies (x8) before they land
When you reach the flight deck of the aircraft carrier, you will see enemy soldiers parachuting down to the deck. Kill eight of these guys to complete the challenge.
7. Direct CLAW to eliminate enemy personnel (x5)
On the flight deck you will find a CLAW to the left of where you arrive. To activate this, find a nearby passage to a control room that you can access by moving some rubble out of the way. Once it is activated, use the CLAW to kill 5 enemies.
8. Get to extraction in under 90 seconds
As soon as you reach the flight deck, drop everything you are doing and sprint for the objective marker at the gunship that marks the end of the mission. You will have 90 seconds to cross the flight deck, probably best not to attempt any other challenges whilst doing this one!
9. Collect intel (x3)
Complete the mission without dying.