Tomb of the Dead

Tomb of the Dead (亡者の墓, alt. Grave of the Dead, Grave of Ghosts) is a hidden dungeon that cannot be entered without having 1,000 or more deaths.

This dungeon was shortened and included in Episode 07 of the anime.

Plot
Sometime between the 2nd and 3rd events, Iz was listening to Chrome talk about how he wanted to get stronger. Around that time, Maple showed up and joined their discussion. Because Maple was busy, she lent him Syrup to cheer him on.

While Chrome walked around a field with Syrup, he defeated monsters and thought about how to protect Maple from those who would exploit her and entered the western wasteland. As he explored the region, he encountered a tombstone players would look closer at and discovered the hidden dungeon.

On their way to the boss room, Chrome and Syrup fought several undead monsters, and Syrup's learned Cover, Mother Nature, and Spirit Cannon. After entering the boss room, a pile of bones animated into a skeleton wearing ornamental armor and holding a long sword. As the fight continued, the boss called armies of skeletons to assist him. After the drawn out battle, Chrome and Syrup defeated the boss.

Rewards
When Chrome defeated the boss on his first solo attempt, he received the following UNIQUE SERIES:


 * Soul Eater : The user Recovers [HP +10%] every time they kill a monster or player.
 * Dead or Alive : When the users' HP reaches 0, there is a 50% chance of surviving with 1 HP instead.
 * Life Eater : The user recovers ⅓ of any damage the they inflict on another player.
 * Soul Sucker : The user recovers [HP +3%] whenever they receive damage.