When the Shoreline employee walks below you, drop on his head and knock him out. Utilize your grappling hook and parkour skills to scale the cliff beyond the ruins, and then slide down some loose gravel and hop to another cliff. Use stealth to eliminate them if you can, otherwise just shoot them to and push the cart into the building to continue your search for The Grave of Henry Avery. Sam will eventually point it out if you can’t find it, and Shoreline will arrive as you move it closer to your objective. Search the ruins to find a yellow cart with wheels. You'll spend more time finding and pushing carts around than you're probably cool with. You can then use that dynamite to blow the door open. When you come to some ruins with more Shoreline equipment scattered about, look for some dynamite sitting in a crate near the door. Shortly after some walking and talking kicks The Grave of Henry Avery off, kill the three bad guys and keep moving with Sam.
We won’t be holding your hand through all the walking and talking, but we’ll cover the parts that you’re likely to get hung up on, such as puzzles and dealing with Shoreline. Players are in for a bit of a longer experience with this chapter of Uncharted 4.
This walkthrough will show players how to complete Chapter 8, titled Uncharted 4: The Grave of Henry Avery, including solving the Libra puzzle in the crypt.