The DuPlessis Diamond Center was broken into just before closing time. Witnesses report multiple suspects armed with machine guns and wearing body armor. None of the wholesaler's employees are known to have exited the building.
Objectives: Bring order to chaos. Rescue all of the civilians.
Loadout: There are armored suspects wearing gas masks in this task--though not all of them. You could select the "Assaulter (FMJ)" preset loadout and make adjustments as necessary or attempt to use non-lethal means with the less-lethal shotgun. Equip more flashbangs and stingers than gas grenades. You may want a gas grenade or two since they can be extremely helpful within the obstruction-ridden workshops if you can tell if the suspect isn't wearing a gas mask.
There are two possible entry points for the mission: the main lobby entrance on side 1, level 1 and a second floor service entrance on side 3, level 2. The second floor entrance is better because you can work your way down into the center without concern that suspects will descend or ascend from the other floors (the center contains a basement level containing the vault).
Order the team to check the door ahead of you. It leads to a dangerously open area. The path to the left is an open passage into a stairwell. If you're too noisy in the room, suspects could enter from that passage. Enter the area and subdue anyone inside. Keep a look on the open passage to the left. You may want to ready a stinger grenade to toss if suspects start to approach.
The door ahead leads into an adjacent hallway. You can move around to the left and proceed down a hall on the right. Note the metal detector. You know suspects are around if you hear the detector go off and you or your team aren't anywhere near its location. If you move around this side, keep an eye on the open passage to avoid surprises.
Past the metal detector, search the office on the left. Use the optiwand and toss in a flashbang if necessary to subdue any suspects inside. The two doors within this office lead to stairwells and possible suspect-heavy areas. Watch the doors if you make a lot of noise or even wedge them if desired.
Search the hall down the right side. Keep an eye behind you. Report any incapacitated hostages on the ground within the hallway. The first door on the right leads back toward the entry point. So there are three doors and rooms to search. Start with the room in the back right corner.
It's another office. Check the room with the optiwand and use a flashbang or stinger before entering. Next check the conference room in the back left corner of the hallway. If the door on the opposite side of the conference room is open, be very cautious. This leads to another hallway and if it's open, that likely means there's a suspect patrolling nearby. If there's just a hostage in the room, close the door so you can prepare on how to deal with any suspects in the hall. Also, check with Sierra 1 and Sierra 2. They have eyes on the two rooms on the opposite side of this hall. You can find out if there are suspects in these rooms. If you're too noisy, the suspects may exit.
Also, the hall leads to a balcony staircase. There's no door at the end of the hall so any suspects on the balcony could enter the hall. Be ready with a stinger grenade.
Use the optiwand to scan the hall and use a flashbang before exiting the conference room. The nearest door leads into a room that's currently under watch by Sierra 1. The adjacent office is under watch by Sierra 2. Enter these rooms if needed or use the sniper to eliminate any suspects inside.
Proceed to the balcony and subdue any suspects patrolling the area. Hurl a couple flashbangs onto the left and right sides of the balcony and send your team in opposite directions to clear the staircase.
Descend the stairs into the main lobby (and the other entry point). Check the double doors on the left with the optiwand to search for suspects inside the security room.
The door on the right leads to the first of several work areas. These are challenging rooms because of the amount of wall obstructions within the room. You may want to manually toss grenades so you can better aim the flashbangs, stingers, or gas grenades at or close to targets. Your team may not be able to spot everyone using the optiwand so don't just charge in if the team reports no one inside the room.
Approach the door on the opposite wall. The one on the right leads to a hallway and could be wedged if you want to be cautious about surprises. The opposite door leads into another work area with plenty of obstructions. Order the team to hurl in a grenade or manually toss one. The area on the right side leads to a stairwell. Expect to encounter a couple guards there. Deploy a stinger or flashbang toward the stairwell before approaching. There's one more work area to the right of the stairwell. Search it like the others before descending into the vault.
Go down the stairs. The vault is a maze-like room with plenty of obstructions. Deploy gas, flashbangs, and stingers in all directions and root out any suspects. Keep one team covering the door so you can search the left or right side with the other team without worry of getting shot in the back. Follow the vault to the opposite side to find a small office. Deploy a grenade inside the office before entering and subdue any suspects that attempt to escape. Comb the center for any weapons you missed or suspects you forgot to report in if necessary.