Encrypted vaults are the standing casket like looking things in the game that you can find by using your ecive (on Playstation it’s the R3 button). They give an audio cue when your descendant scans the world when facing in their direction. The encrypted vaults in the Fortress drop Pure Energy Residue which is used in the crafting of Afterglow Sword Synthetic Fiber, Luna Enhanced Cells, Yujin Stabilizer, and the Ultimate Bunny Spiral Catalyst. In order to open a vault you’ll need to have looted a Code/Precision Code/Ultra-Precision Code Analyzer. These can be found on enemies in the Call of the Descendant missions in each region. Note that not all encrypted vaults will spawn every time. This list will be updated if I find more. If you find a hologram that’s not on my list and want to leave it in a comment, I’ll add it and credit you. ๐
The Aurora Forest – 3 vaults
Frozen Valley – 4 vaults
Fallen Ark – 7 vaults
Convertor Facility – 2 vaults
Defense Line – 5-6 vaults