"You Ain't Seen Nothing Yet" is the first chapter of Uncharted: Golden Abyss.
Plot[]
The story flashes back to two weeks earlier when Nathan Drake and his partner, Jason Dante arrive at a jungle on a jeep, which gets stuck in mud, forcing the two men to journey through the jungle on foot.
After climbing some cliffs, they come across a ridge with a rope bridge. Before crossing the bridge, they spot some charcoal rubbings on the bridge's columns. Nate rubs them and discovers that they are part of symbol relating to the secrets of the Kuna. After collecting all symbols, he puts them together to form the whole symbol. He claims it could be Muisca, except that they never migrated north of Columbia.
Dante has more to show Drake, so the two press on, climbing more cliffs and several other structures. They discover a small shiny turquoise glyph, which has a style matching the symbol at the rope bridge they crossed earlier. They come across a structure with a gully at the top that they need to reach.
Walkthrough[]
After the cutscene, go ahead and follow Dante until you trigger the next cutscene. Head up the cliff and drop down, head left to pick up a treasure. Continue following Dante until you reach the bridge and do the first two charcoal rubbings. Use the touch screen to rub the charcoal from the papers to reveal parts of a symbol. Cross the bridge to the other side and to rub the next two charcoal papers, which will reveal the remaining symbols. After that, you must put them together to solve the mystery. Using the touch screen, rotate each piece until they are in their correct orientation.
After the cutscene, drop down and approach the log. As you cross, you must carefully balance yourself by rotating the Vita system. Look at the meter at the top to make sure your are in the middle range. Continue following Dante until he spots a turquoise glyph. After climbing, head left and pick up another one, and then scale the ruins and and about midway up, go left to collect another turquoise glyph. Head back and climb up, leap across the rocks, then climb along the ledges, and keep pressing on until you trigger the cutscene leading to the next chapter.