Deadfall Adventures

Hey all, just a quick video guide for unlocking this achievement. This is in mission 7, and all you need to do is head to the area behind the waterfall(It's after you zipline down like 10 feet, and straight ahead), then grab the treasure and head back out. Hope the video helps!

I got this one purely by chance. After the cutscenes where the head roles down and you slide down a rope, keep to the left side and follow the path to the waterfall. Go through the waterfall and you will see a hole. Go through the hole and on your left side you will see a wooden bridge and on your right a "power of the warrior" treasure behind a wall you can destroy with TNT. Go to the left and over the bridge and into a cave, and follow the cave until you exit on the other side. When you jump down the achievement should pop. I made a video walkthrough on what I did.