That mission was also difficult to me, the way i completed it was by just waiting for the nme to push and bleed his forces, they always break the left side of the building, the front door and the center back, i deployed carbines for CQB and support machine gunners for long range.

After the nme is not anymore throwing masses at you i started moving all the forces to the left hole made by the insurgents. Theres going to be nmes guarding the left and down corner of the map, so you must always move slow and use flashes and smokes.

After killing those on the left, then i start moving slowly from the left side to the top left corner which is the exit, nmes are going to spawn on the Top right and there might also be nmes hiding behind the tank close to the exit. Wait for the nmes on the Top right to push and keep an eye for possible nmes behind the wreckage tank.

With those guys killed i just rushed to the exit.

There can only be 4 rockets:

1. First rocket will be either left corner, middle doors or right window. If it's middle doors, restart, because it usually means death.

2. Second can be either be right bottom corner, or top left curved wall.

3. Third is always Hawkeye's wall.

4. A fourth rocket takes out the bottom wall, BUT ONLY if you have entered both the green room and the middle hallway.

Fresh spawned enemies will path to you on their own, so wait and kill them, before heading out. At around ~25-30 seconds, you should have a window to flee. Window ends at ~40s.

BUT there are enemies that will remain at their posts and can cross map you, that you should keep in mind:

Top left sandbags.
Top middle, right outside Baba's FOV to the left.

Extra enemies spawn when you are getting closer to the extraction point, from the bottom left and top middle. These ones will path to the extraction point.

This is how I did it. If the rocket comes from the west restart. Step 1 get all 4 LMGs in position asap. Step 2. Get all 5 Allies into the small office behind the desk to cover that position.

Once that's done wait until the attacks stop and the rest of the mission is just about safely removing any remaining threats then making sure the route to the evac zone is covered by LMGs.

https://www.youtube.com/watch?v=fmKYFdZVd0w

For the Clock Race and Lone Wolf, just start right next to the vehicle at the start with 7 smoke grenades and leap from from Smoke to Smoke all the way to the evac zone, 7 smokes will let you reach the tank then a short sprint to the door.

Once the 5 guys in the house die mission ends.

After more tries than I can remember (at least 20!) I got 3 stars by filling the building with smoke and having 1 guy run around and collect all the allies and bring them back to the room where your squad started, covering your rear whilst doing so.

whilst the one guy was doing that i had grenadier fire grenades at the guys at he car and the guy in the south behind rubble as well whils eveyone else provided covering fire to the bottom left corner of the map as lots or reinforcements come from there.
then i smoked the area outside starting room to conceal everyone climbing out.
I slowly made my way about halfway up the left with micromovements to spot and shoot enemies
then i created a path of smoke up to the evac point and had the allies sprint to it whilst a covered every possible angle in an arc of fire and continued to throw extra smoke to hide the allies whilst they ran.