In the world of ATLYSS, exploration often rewards players with valuable gear and lore. The Sanctum in particular holds three elusive chests that many overlook, but securing these unlocks important rewards that can bolster your journey. Knowing where and how to find these chests transforms a routine visit to the Sanctum into an adventurous treasure hunt.
ATLYSS combines intricate level design with hidden secrets that challenge even seasoned adventurers. The Sanctum’s secrets are subtle but well worth the effort, pushing players to refine their movement and observation skills.

Where to Find Costume Sets in ATLYSS
Main Quest Walkthrough
Loot Drops from Enemies

Catacomb Secret Rooms
How to Get to the East Wing in Crescent Keep

Builds
Guide
All Costumes & Cosmetics
How to get All Hidden Chests in the Sanctum
Here are the exact locations of every hidden chest tucked away inside the Sanctum, each requiring specific movement techniques to access safely.
Between Rocks (Behind Shop)

Behind the shop, on the left side, jump atop the nearby rocks. Look carefully for a narrow crevice leading downwards. You’ll need to drop through this crevice to discover the hidden chest below. This spot cleverly disguises the chest from casual sight and rewards players who take their time exploring.
Top of Tower

To reach the chest atop the tower, begin on the first shelf to the left from the entrance. The trick involves jumping away from the wall, then immediately performing a double jump back toward it, landing on tiny ledges ascending to the chest. This sequence can be tricky at first, but mastering the timing ensures you won’t fall short.
Behind Barracks
This final chest is best accessed right after the tower chest. Dash toward the cliff edge near the barracks, then drop down behind them. The descent is simple but requires precise timing so you don’t miss the ledge. Once behind the barracks, you’ll find the chest waiting to be claimed.


