At the same time, Merrick didn't forget to cast buffs on Aiden as well. "Awesome!" Aiden was in awe. Even in the heat of anger, Merrick had not forgotten to buff them both. Such a great combat habit was worth learning! "Away I go!" Two and a half minutes later, Merrick leaped forward, charging at the eerie creatures rapidly approaching Westhand. "Gray." Aiden didn't stay put either, immediately summoning Gray. Even for a divine NPC, with so many eerie creatures, it would be impossible to eliminate them all while keeping the surrounding buildings intact. Merrick's role was primarily to take out any creatures that posed a direct threat to the city, ones that Aiden couldn't handle on his own. The rest was Aiden's responsibility. Of course, with Merrick around, Aiden could just hide somewhere and wait out the danger, but there was no need for that. When leveling up normally, he had to scour the mountains for bosses. Now, they were coming to him in clusters. He was getting free experience from it! "Let's go!" With Gray by his side, Aiden went on the offensive. Soon, an eerie boss with five arms appeared before him. 'Elite Eerie Boss (Unknown), Level 30' 'Health Points: 10,000' 'Mana Points: 10,000' 'Strength: 2,000' 'Physique: 1,000' 'Energy: 1,000' 'Agility: 1,000' 'Description: Unknown creature. Avoid becoming its target.' Boom!'-150,000 Points' Gray didn't waste any time. With the Dragon King's Breath, enhanced by all of Merrick's buffs, it dealt a whopping 150,000 in physical damage. The elite boss collapsed instantly. Unlike regular monsters, creatures and bosses from the eerie invasion had much lower Health Points. This particular boss only had 10,000 points. In return, its strength stats were far higher than other bosses of the same level. They attacked fiercely, but couldn't afford damage. They were easier to kill, but more dangerous in packs. For Aiden, it didn't matter. With Gray around, even Monarch-level eerie bosses were trivial. Those Level 50 and below were nothing but weaklings. "Keep going!" Aiden didn't stop, weaving through Leafport. Ding! 'Congratulations, you have slain an Elite eerie boss…'Ding! 'Congratulations, you have slain an Elite eerie boss…' Ding! The system notifications rang continuously. Gray moved like a reaper wielding a scythe. Wherever he went, no boss regardless of rank could survive a single Dragon King's Breath. Even against the encirclement tactics that other NPCs or players feared most, Gray only needed one World-Shaking Dragon's Might to subdue all eerie bosses before eliminating them one by one. Through the tide of countless eerie creatures, not a single scratch came his way. Under this kind of impossibly efficient slaughter, the system chimed again. Ding! 'Congratulations on reaching Level 32.' Aiden's level had increased with a crisp, satisfying chime. And all this happened in less than an hour since the eerie invasion began. "As expected, continuous boss kills really do improve experience and gain efficiency," Aiden said with a knowing smile. Typically, eerie invasions didn't last an entire day. Without fully eliminating the targets, the creatures would retreat after about five hours. Even with a conservative estimate, Aiden could reach at least Level 36 before the invasion ended. And that was just the minimum. Moreover, Aiden's goals went far beyond that. From his memory, compared to other main cities, Leafport suffered particularly heavy losses this time. Most of the city had fallen, and at the final moment, many powerful NPCs had been surrounded and killed. The number of high-level eerie bosses was simply overwhelming. In the chaos, even just taking down a few could quickly push him to Level 40. Normally, snatching bosses from NPCs was considered unethical. The NPCs would hunt the individual down, despising them for it.Such shameless behavior in Doomsday was far more serious than killing ordinary players. But during an eerie invasion, where NPCs were struggling to survive, if someone suddenly appeared out of nowhere and killed those bosses with a single strike, they'd become a hero. Why not take advantage of that? Looking at his inventory, Aiden's Cooldown Stone and Tome of Carnage were waiting to be utilized. His heart burned with anticipation. With these tools, he could easily overpower those bosses. Still, he wasn't in a rush. Aiden glanced outside the city. Magical elements swirled chaotically as NPCs engaged the three Level 100 Lord-level eerie bosses in intense combat.