Operation Taken Dagger

Kill the enemies in space. If you have trouble doing so, look for the sniper rifle on top of the large flat debris panel floating around somewhere (at quite a distance from the enemies).

Blast a hole in the ship at the designated spot and search the upper left side of the area to find two new Weapons, the R3K and the DCM-8.

R3K & DCM-8 Weapons

Hit the control panel and go through the partly opened door after a few seconds pass. Gravity is enabled again. Kill the two enemies in the hall up ahead (aim for their heads) and enter the cafetaria on the right. Enemies will spawn on the left side as you enter, so be careful. Continue through the ventilation shaft and use the up botton to access the ship's camera's, which highlight each individual in the proximity. Stealth kill the guy up ahead and move into the next area, which you should clear by headshotting each enemy, while staying undetected if possible.

Head upstairs after you've defeated all enemies and go through the door to reach another hall. Turn right and go through the door at the end. To your immediate left, refill your ammo and collect the suppressed Weapon on top of the ammo crate; it has a better zoom. Go through the door and turn left. Scan the area for enemies. There's one on the same (upper) level as you; ignore him for now and continue to the left. Here, start taking out enemies one by one as long as you do it unseen; others cannot see their allies drop. Then kill the one on the upper level and start taking out enemies on the other side of the area. Lastly, eliminate the ones in the middle of the area, starting with the ones furthest away from the hostages. The commander in chief is Most Wanted member Cpt. Lt. Radoslav Barkov.

After this, head up one level and eliminate the enemies in the two rooms ahead. Use shock grenades on the strong bot at the end. In this last yellowish chamber/area that had enemies in it, access the armory on the far left side of the ground area. Inside you'll find the P-LAW Weapon.

P-LAW Weapon