For Fortnite's Rippley Vs. Mission Sludge, you will need to earn five treasure golds for one of the challenges. The task can be a bit tricky, depending on where you land on the map. You'll need to loot a total of twelve chests to earn a treasure gold, so you'll want to go somewhere that can be quiet, but also has a lot of loot.
On the map above you can see the marked location of a ruined castle. It's a great place to start your scavenger hunt, as it's almost always quiet and has six chests, which instantly gets you halfway to your goal.
As you enter, make sure to land on the roof, then grab the chest that spawns on the balcony. There are two more chests in alcoves in the main building, and three more dotted around the outskirts of the castle ruins. You can easily hear where they are just by running.
When you've looted them all, head to Sweaty Sands, which is nearby. You can find two chests on the skateboard course, then head to the nearest building and start looking for more. It won't take you very long to find them, as this is a high spawn area for chests, and you have to listen carefully to the sound the chests make to find them.
Remember that you are looking for chests so you should be able to find plenty of Medi packs. Save them in case the circle starts to shrink before you manage to get all twelve chests and use them to keep you alive while you search. Don't try to weather the storm; pledge to get this treasure gold medal.