Cut Short
There are six Walkie Talkies hidden around the Acropolis. Cut them down any time you see one of them and gain extra experience. Follow the map to find all of these; they’re easiest to see using Survival Instincts at night, but any time will do if you know where to look.
W of Remnant Bazaar: Look on the right side of the path before you leave the first half of the Bazaar area.

S of Remnant Bazaar: Enter the lower portion of the bazaar. Look to the left and right side of the central area (the tiny circle on the map). There are two Walkie-Talkies right here.
S of Remnant Bazaar: Before leaving the southern bazaar, search by the southern wall.
S of Riverside Landing: Look on the left side of the path when you are about halfway between Riverside Landing and Tower Courtyard.
Next to Tower Courtyard: The last Walkie Talking is in the corner near this Base Camp.