Siegfried could see the drunkards transform, revealing their pureblood forms. But, this is what gave away their weakness, too. As he was a pureblood himself, he knew the best that despite their healing factor, you can still kill them the same way you kill other creatures; attack the vital organs. So, he and his team dashed toward the Drunkards, him, Blade and Zorro took a leap at three of the drunkards infront of the group, while Venom, Leo took the three that were behind the group. Gold took a part in the battle too, having left his sack of goodies in his pokeball behind, helping out Venom and Leo. Ricky used his Psychic powers to help out both groups, keeping the drunkards in place using Psychic so they couldnt move to fight back temporarily.
Zorro and Blade used their claws to behead two of the drunkards, while Siegfried kept clawing at his target furiously, caving into their skulls, soon enough carving into their brain matter with his claw gauntlets. This would have killed them, as these fatal wounds were something that couldn't be regenerated from fast enough to survive.
Leo and Gold used Thief to take the two drunkard's weapons from them, then used Shadow Sneak to hide and come up behind them, cleaving their skull by slamming the blade of the drunkard's weapon into their heads. Then, they took whatever valuables they had on them, as they do. Venom, on the more boring side, used a combination of Toxic, Venoshock to attempt to take down a drunkard, however it hadn't done much due to his regen. The drunkard, fighting himself out of Psychic with anger, was just about to slash one of venom's wings off when Ricky pulled him up into the sky with another Psychic, then flung him right out of the building, creating a hole in the roof. The man flew off far, far into the sky like a firework, coming back down and hitting the ground after 6 seconds. The impact created a blood splatter that reached far, and the man's ribcage penetrated his chest from the fall, dislodging and stabbing through his chest.