Solarii Fortress - Combat in the Street Below the Palace - Part 5

Immediately turn right and take out the 2 men on the ledge on the other side of the street. If you use a grenade, aim above their heads and fire.

Lara will take some damage from the machine gun as she does this, but if you're quick, you can kill the both enemies with one grenade.

Crouch behind the metal crates until Lara's health is restored. Take care not to position Lara behind the gap between the crates, since the machine gun's bullets can go through the gap.

When you're feeling tip-top again, run along the ledge, jump to grab the zip line and slide down to the building where those last 2 enemies were.

Inside this room, turn left, grab more grenades and move to the opening nearest the machine gunner.

Stay low behind the metal base of the wall when he fires. Then, when there's a pause in the action, equip your rifle, aim above the machine gun and fire a grenade.

When you've killed the gunner the battle is over, and you receive 100 XP.