Plant the C4 | Act 3 - Burning Bridges Sniper: GW2 Guide
Last update: 11 May 2016
After clearing the area, run down the stairs to meet with your companion.
SECRET 3/4 - On a crate nearby the stairs.
Run across the bridge and you pick up the explosives lying on the crate.
SECRET 4/4 - On a table in the upper part of the room.
The first charge has to be planted by the crates on the left side.
The second one on the pillar beside Diaz.
Once everything is ready, follow your companion deeper into the cave and detonated the explosives. Everything will start crumbling - don't lose any time and start running away ignoring anyone on your way. Keep following Diaz until the mission ends.