Players operate a corpse that was formerly a prisoner in a dungeon, and this corpse is parasitized by a clump of cells and begins to move. The map is divided into several large dungeon levels, which are explored to defeat monsters, collect weapons and equipment, money and "cells". These cells are mainly obtained by killing enemies and are used as a currency to exchange with NPCs for new abilities or equipment, such as increasing the number of times a blood potion can be used, increasing the amount of money that can be recovered, changing the additional properties of weapons... etc.,[4] but you can only trade these cells with merchants at the beginning of each city. The player has the opportunity to obtain "blueprints" for specific weapons and equipment during the process, and has the blueprints and finds a merchant in order to spend the cells to unlock new weapons or items. Once the player dies, the cells, weapons, equipment, and some of the money previously collected in the process will be recycled, and the player will start over from the original city with an empty body. Unlocked blueprints of weapons and equipment can not stay forever (recycled after death), but will randomly appear in the city.

The game's combat concept is similar to that of the Souls series - high difficulty enemies, high chance of death, and learning experience through death. The combat is highly varied and free, with intuitive and smooth character handling and plenty of combat. The protagonist can roll to dodge enemy attacks, equipped with shields for defense or shield counter, weapons such as swords, swords, bows, guns, whips, etc., both close-range and long-range, in addition to auxiliary equipment such as freeze bombs, automatic firing arrow towers, etc., diverse elements allow players to freely match and create new combat strategies.