Online Game: I'm a Monster Mentor, Teaching Parrying from the Start

Xu Mo transmigrated into the world of an online game and became a hidden BOSS. But there's a problem... 【BOSS-type creatures' favorability toward you increases by 500%】 Looking at his pitifully useless abilities, Xu Mo was on the verge of tears. What use is this damn skill? Fortunately, Xu Mo had the 【Mentor System】. As long as he taught other creatures, he could acquire some of their traits. Facing the Lord of Purgatory. Xu Mo: “Have you ever heard of a sword technique called the Fast-Slow Blade?” Summoned before the Abyssal Demon God. Xu Mo: “Standing still and attacking isn't advisable. You might want to try moving around, too.” At last, thanks to Xu Mo's tireless efforts, the players lost it. The leader of a top-tier solo-player guild put it this way: “Damn, I was offline for just three days. How did this game turn into this mess?” “We wiped eight times as a full group in a simple materials dungeon!” A newbie who had just left the starting village complained on the forums: “Are the mobs in this game really that vicious?” “I just looked at one, and it charged me and slashed me seven times. Every hit staggered me, so I couldn't move at all.” In response, a certain monster instructor who wished to remain anonymous commented: “I wasn't targeting any of you players. I was just making this game more realistic.” “After all, is it really unreasonable for monsters to learn a few more skills?”