The Shadowx - Chapter 23:The Invincible!!

The story follows Danheng, who transmigrates to the Douluo Continent seeking a peaceful life, only to be persistently pursued by Gu Yuena, who insists on becoming his wife. She encourages him to strive for greatness, aiming for him to become the leader of soul beasts, the Dragon God, and the ruler of the Divine Realm. Despite his desire for a quiet life as a librarian, Danheng finds himself entangled in various challenges due to his wife's ambitions.

Bizarre clouds billowed by in the sky, as if in a hurry.

During an anti-drug operation in the city of Gongzhou three years ago, a chain explosion had gone off on site due to a mis-judgement made by the Commander-in-Chief Jiang Ting, and caused the anti-drug detachment team to suffer great casualties as a result. Three years now, Jiang Ting, who was supposed to have already been killed in the line of duty with not even a body left to bury—miraculously woke up from a coma.

His heroic soul had never been at peace. He returned from Hell back to the living, to give everything he had to bring the bloody and bizarre truth back to light.

- Description from Novelupdates

5 years after the world changed, the final boss appeared.

[Entering the Dungeon: Scarlet Premium Choice][Dungeon type: Solo][Please choose the position you wish to apply for][1. Delivery Driver][2. Stock Clerk][3. Shipping Clerk][4. Receiving Clerk][5. Loader][Detection of host entering the Dungeon, cheat loading successful][Please host, choose one of the following three cheats][1. Purification Template: Possess purification abilities, immune to any pollution][2. Super Brain: Photographic memory, brain processing capabilities multiplied by ten, immune to mental damage][3. Zombie Template: Impenetrable skin, immense strength, bloodthirsty, fearless]...[Entering the Dungeon: Bloody Train][Dungeon type: Large-scale multi-player Dungeon][Number of participants: 30][Detection of host entering the Dungeon, cheat loading successful][Please host, choose one of the following three cheats][1. Infinite Soul Coins: Start with 1000000000000 soul coins, spend at your leisure][2. Hundredfold Amplification: Can amplify a single attribute of yourself by a hundred times, can switch to any attribute at any time][3. Stone Man: You become an ordinary, unremarkable stone with no presence, you can safely pass this instance]Murru Feng realized that his cheats could be refreshed with every Dungeon World.