The Mind Palace is a dark and twisted realm accessible if you own the Mask of Darkness DLC for Prince of Persia: The Lost Crown. It becomes accessible after players escape the Depths and acquire the Shadow of the Simurgh time power. This realm serves as a parallel storyline, offering a unique chapter in Sargon's journey.
To start the Mask of Darkness DLC in Prince of Persia: The Lost Crown, progress in the main game to unlock the Rush of the Simurgh and Shadow of the Simurgh, then visit The Haven, speak to Neith to receive the "A Snake in the Grass" side quest, and travel to her marked location west of The Haven, where the entrance is located.
Upon entering the Mind Palace, you will lose most of your amulets, health upgrades, and powers. You will start with three health bars and two Simurgh powers.

Wak-Wak Trees x9, Memory Fragments x16, Amulets x3, Soma Tree Flowers x4, Healing Potions x3, Outfit x1, Side Quest x1, Quest or Puzzle Related x3, Named Enemies x6, Health Boosts x5, Amber Crystals x20, Arrows Refill x37, Cannons x6, One-way Blockers x7, One-way Blocker x1, One-way Blocker x1, One-way Blocker x1
The following legend of Radjen's Mind Palace interactive game map defines the points of interest / markers displayed on the map. Each marker corresponds to a specific element to facilitate efficient navigation and interaction with the map.
Save your progression and manage your equipment (Amulets, Athra surges). Respawn here on a Game Over or use them to Fast Travel.
Some of the Memory Fragments are automatically collected when you reach certain locations, while others are obtained by breaking blue crystals scattered throughout the map. These fragments reconstruct Radjen's memories, revealing her past, motivations, history, etc.
Amulets grant passive bonuses that can alter your playstyle. They have very diverse powers from attack boosts to healing properties or even game-changing capacities like display enemy life bars, signal nearby treasure chests, etc.
Soma Tree Flowers extend our character's health bar. Each Soma Tree Flower adds another segment to the life bar.
Sargon's Outfits allow you to customize your character's appearance. You can find them after opening a particularly tough chests to get to. They are purely cosmetic items so they don't have any gameplay impact.
Additional side quests, not related to the main storyline of the game, which can be completed to earn valuable rewards.
Various items or locations related to side quests or puzzles available in the game.
Named Encounters. Notable enemies that appear in the Prince of Persia: The Lost Crown game. Here you will find bosses that are part of the game's main storyline, as well as other named enemies that will stand in your way as you explore Mount Qaf.
These floating hexagons form amber barriers that block doors or bumper orbs, restricting access to further areas. To remove the barrier, locate and attack the nearby amber hexagon, which will move to a new location when hit. Continue hitting it until the appropriate barrier disappears, allowing you to pass.
Arrow stands that will allow you to replenish the supply of your arrows. Arrows can, of course, be replenished after you unlock the ability to use the bow, that is, you find the Bow of Menolias.
To get rid of them and clear the way, parry & bounce the balls they shoot.
Different types of passages that can be passed the first time only by approaching them from a particular side. These can be, for example, gates that can be opened by pulling a lever located on one side of them, or wooden blockades that can be destroyed but only by hitting them from a particular side.