As someone who used the Independent mode to play this game, the defenses of the average boss meant nothing to Wang Yu because of the level of perfection from each and every one of his attacks.
Only bosses that were wearing thick armour were able to properly defense against Wang Yu's attacks.
But this Viper General really was strange. Even though he did not have much armour on him, Wang Yu's normal attacks could only deal 1 damage to him. This was something that Wang Yu had never seen before!
"It had reinforced it's defenses!" The other players immediately shouted. As veteran players themselves, they quickly realised that was going on, launching several probing attacks at the boss.
But the Viper General used [Nether Serpent State], buffing itself.