In a way, when it came to improving his skills, Aiden had to admit she was the main reason he could reach this level. While other top players were busy upgrading and improving themselves, he spent all his time figuring out how to pull off the most perfect and effective moves with the fewest resources. And in the end, he did it. If the game was tough for other players in Doomsday, then Aiden's experience was like being thrown into the deepest pit imaginable. Now, all that hardship had finally paid off. His control and movement were precise to the extreme, and he was managing two things at once. Even famous assassin players like SilkenShade would not last more than two seconds in this fight. But Aiden's performance was flawless. Gray kept attacking nonstop, while the Rogue's health bar dropped steadily as if it were burning. The Rogue kept changing positions but still couldn't find a way in.Boom! The next second, the Rogue lost patience and decided to strike. A flash of black light appeared in the sky, turning into a thunderbolt that crashed down. Since he couldn't find an angle on the ground, he attacked from above. Too bad for him. Aiden had already predicted that. Gray was waiting along the path and took the hit head-on. '-6700' The damage was terrifying. Even with Gray's health, half of the bar was gone instantly. At most, three more quick attacks from the Rogue could finish Gray off. But at the same time, the Rogue's health bar was dropping fast too. Another Dragon's Breath hit him, pushing his health below twelve thousand. It was a fight to the death. Whoever backed down first would lose everything. Gray roared in pain and tangled with the Rogue again. '-930' '-964' '-933' A stream of damage numbers popped up over the Rogue's head. The Rogue struck back again, and the red orb flashed. '-8500' That hit was even stronger than before. Gray's health bar dropped to almost zero. Just one more attack, and Gray would be dead. Once that happened, Aiden would lose his Mythical beast and be left alone against a Monarch-level boss with one-fifth of its health left. He would have no chance at all. Maybe realizing that, the Rogue locked his eyes on Gray. "Too bad you figured it out only now. You're a little late," Aiden said with a bright smile as a page with ancient markings appeared in his hand.It was the Tome of Carnage. That apocalyptic item was his final trump card. Before the Rogue could move again, Gray tilted his body slightly, and a red light shot through the air, locking onto the Rogue. 'Slaughter of Carnage' '-1859 (Critical)' 'Target Health below 20%, "Instant Death" triggered' '-8026' 'Rogue: 0/50000' Two damage numbers appeared back-to-back. The Monarch-level boss that had ruled this place for who knew how long died after using only two quick attacks. His body turned to dust and faded into the air. 'Ding! Congratulations on defeating the final trial boss: Abyss Rogue.' 'Ding! Congratulations on completing the Abyss-level tier advancement trial.' 'Ding! Congratulations, you can now gain experience.' 'Ding! Congratulations, your beast Gray has reached Level 10.' 'Ding! As the first player to complete the Abyss Trial, you gain +5 to all attributes.' "Finally cleared it." Listening to the system's pleasant notifications, Aiden let out a long breath. Even though he had expected this result, reaching that moment still made him incredibly happy. An Abyss Trial. Even in his past life, the best record had only been at Level 100, when several divine-level players teamed up to barely clear the Inferno-level trial. But now, with just himself and Gray, he had wiped out five terrifying bosses on his own. The difference spoke for itself. At the same time, outside the game world— 'Ding! System announcement: Player Nighthale from Grendola has cleared the Abyss-level tier advancement trial, becoming the first player in history to do so. He has earned the legendary title "Messenger of the Abyss."' 'Ding! System announcement…' 'Ding! System announcement…' The crisp system messages spread across the entire world of Doomsday, echoing in every corner. At that moment, every player froze in place, staring blankly as they listened to the shocking announcement that hit like an atomic bomb. What is going on? "Tier advancement trial? What's that supposed to be?" "Sounds insane. Wait, does this mean that guy just got the world's first clear?" Many players looked confused. They had just started the game and didn't even know what the tier advancement trial was.