Inside My Favourite MMORPG?

Our protagonist has woken up in the most trending MMORPG known as Dungeons and Mythical Creatures. His identity as Jerfferey Darwin has changed to that of the most iconic villain of the game, Lazarus.
Watch how the protagonist abuses his knowledge of the game to become overpowered to avoid the impending terror of the demons and make his name renowned for generations.

“It’s a much different when you are expierencing plot as resident of this world compared to when I was just playing as the protagonist. I have truly taken a great liking to my new reality, the feeling exhilaration as I continuously grow stronger, trampling on the insolent with sheer power and solidifying my reach all over the world. I can’t wait to become a true God to truly relish in this feeling of omnipotence and omniscience. It is fun”.

However, Jefferey Darwin now Lazarus will inevitably discover the torments of being evil, a villain. So when faced with these adversaries, while the accumulating emotions gnaw at his heart will he still continue being a villain or be drowned in guilt?