Palace of Beauty

Once you reach base level 150 you'll receive a quest when you enter the new city of Eclage. Following this questline will lead you south out of town, then to the northern tip of the map to the Gate of Yaifu that sends you to the Palace of Beauty.

This is a solo only dungeon that can be cleared one time and has three floors. The puzzles and traps within are static, meaning it will be the same experience for everyone who runs this dungeon. To proceed to the second floor you must get all chest rewards and defeat all monsters. Once you proceed to the next floor you can never return to the previous one.

Watch through one of the video walkthroughs on youtube like the one below if you need help with this dungeon.

The bosses and mobs in here are extremely difficult so progress as far as you can for some treasure and come back when you are stronger.