The Lost City - From the Third Trebuchet Back to the Gate

Drop down to the lower deck of the trebuchet and use a rope arrow to make a zip line down to the nearest tower to the southwest. Slide down and grab some salvage there.

Then make another zip line so you can slide down to the wall of ice on the side of the ruined tower to the west.

Climb the ice wall to the handhold above. Then climb around to the right and scramble onto the ledge above.

Loot the packs left behind by the archers you killed with the trebuchet. Then move up the rocky slope.

Stay low as a Deathless archer approaches from the direction of the gate.

Kill him with a headshot from your weapon of choice.

Then take care of a second archer on the rooftop ahead.

Use the metal grapple rings to swing over to the roof where the last archer was standing. When you do, more archers appear—one directly ahead and a squad of three ahead and to the left.

If you keep to the lower right side of the roof, you can target the single archer, and the others won't be able to hit you.

Then move up to the peak, peer over the top, and shoot the Greek fire vessel to take out all 3 archers on the next roof.

If you missed it earlier, statue #8 for the Vandal Challenge is here at the edge of the roof.

Swing across to the next roof to the west.

Move to the far edge and take out 2 more archers down below. They'll be lurking near the horse statue to the right of the citadel's main entrance.

Next, jump across to the next roof to the south to loot the packs dropped by the 3 archers you killed earlier.

If you missed statue #7 for the Vandal Challenge, you can destroy it now. It's sitting on the balustrade above and to the left of the citadel's main entrance. (You can also shoot it later from the plaza below.)

And, if you missed statue #2, on the roof above the first gate, you can also destroy it now from behind. Just head for the southwest corner of the roof, and you'll find the statue sitting on a marble railing overlooking the city streets.

Return to the previous rooftop, where you stood while shooting the last few enemies, and make a zip line so you can slide back down to the ground.