The Hidden City – Dunkin’ Bones – Challenge Walkthrough
Knock down three skeletons.
1/3 – During the Rebellion Lives mission (Reach Unuratu’s prison cell), when you reach the bridge blocked by the guards, follow the beacon along the climb until you have to rapel down. Instead of rapeling all the way down to the white mark, stop slightly above it and swing towards the skeleton on the left.
2/3 – After having hit the first skeleton, swing right. The second time you have to rapel, there is a skeleton right below you, slightly to the left.
3/3 – After swinging across to the prison, when you land by the “The Winged Serpent” mural, go right. When you have to jump right to the overhead axe wall, instead of continuing right, rapel down and find the skeleton.