NMPD HQ

From the start, exit the helipad and enter the building at the end. Go upstairs and exit on the upper level.

Outside, deal with Covenant forces on the balcony to the right and in the lower area to the left. Watch out for a turret in the back corner. Snipe the turret grunt and a brute if possible before engaging the rest.

If a Pelican arrives with reinforcements (brute and grunts), eliminate them before proceeding through the door to the left.

Enter the next room, head to the back left corner to proceed.

Take out the grunt on the turret to the right and the Jackal snipers on the raised platform to the left. Stay in cover and clear the ground level, then the upper Jackals.

Head through the door on the top tier into the next building. Restock ammo or switch weapons. Proceed through the door on the opposite side.

In the next outdoor area, immediately look up and right for two Jackal snipers on balconies. Then, look right for two more on a sky bridge. Deal with the Covenant turret in the far left corner.

A Phantom will drop off jetpack brutes onto the helipad below. Eliminate them, focusing fire on their jetpacks if possible. Be aware of flanking.

Enter the door next to the turret. Continue through the indoor section and out to the next helipad area.

Deal with the Covenant turret and Jackal sniper to the left of the exit on the top tier. Lure the grunts and brutes in the courtyard into the indoor area to eliminate them safely.

Clear the bottom area, then pick off the sniper and turret grunt. Finish any remaining enemies.

As you approach the top level, more brutes will appear, including one with a hand-held turret. Take cover and defeat them. Restock ammo and exit through the top-left door.

Inside, take the ramp down, kill the grunts, and proceed through two sets of doors.

Head down the ramp onto the helipad. Eliminate Jackal snipers and fuel-rod grunts attacking your allies on the rooftop.

Jump onto the nearby girder, run across the gap (ignoring Banshees), and jump to the rooftop. Fight your way up the stairs to the Pelican crash site to rendezvous with Dutch and Mickey.