Overpowered Main Character

The tower game he once played becomes reality. Being the only one who every cleared the game because of it's difficulty MC quickly gains powers with his knowledge and powerful allies.

MC was one of the top hero's, called pyskers. However, after being reborn he becomes a villain. A villain who saves people? Being on the other side with the same principles as in his former life he gains new and stronger powers in order to get revenge on the ones who've wronged him in the past.

Main character gets the ability to be transported back 24h after dying, while also getting to choose an ability from the person he died to. With this he goes back in time to clear the tower but then in his own way.

MC loses everything in a game named 'The Lord'
The next day he realizes he went back in time to just before the game launched and decided to prepare to take revenge on the people that took everything from him

The MC is reincarnated into the future, here he learns that he is portrait as the villain. Together with the help of a lesser god, he uses the knowledge of his previous life to get stronger fast.

The MC is special, having both the power of an Immortal and Shapeshifter, he's able to make up for his weaknesses. This allows him to overcome problems people face with only one trait, while training to become what he dreams of. Someone who can kill all that come out of the black hole