The achievement pops when you
discover Lucky Montoya's body. From
Khaleel Chakroun who runs the General Store next to the Gorgon landing pad, you learn of
Charles from Accounting. He hangs out at the
Marauder Camp in the
southeastern corner of the Gorgon Canyon map.
From Khaleel's Survival Goods, follow the darkest orange terrain on the map in roughly a southeast by east direction. Be mindful of the enemies along the entire route to the Marauder Camp. Turn left just before the
OCI Lower Exterior. The
OCI Lower Exterior will show up on your map as a fast travel point once you approach it. Referring to your map, you'll see the path veers downward into the
Worker Domiciles. If you haven't been there yet, you will discover it, earn XP, and it will show up as a location on the map.
Continue down a short ways until you reach an encampment. This is the Marauder Camp. Defeat the marauders with special care towards Charles from Accounting. Don't forget to loot his body because he carries "
Special Delivery," one of three science weapons required for:
After you defeat the marauders, refer to your map, and head to the lower right boundary of the encampment. Enter the passageway you find there. You'll see a Canid investigating a body. Kill the Canid and approach to
discover Lucky Montoya's body and pop the achievement. Next to him is an audio log, "
Lucky's Notes: Smoke and Mirrors." Pick it up. It is one of the audio logs required for:
The following is a video that shows Montoya's location on the map followed by the discovery of his body and picking up the audio log: