Here is what I remember. Lived alone Male Has uncle and some family Uncle was someone high up in government Monsters started to appear Lots of population didn't survive Earth expanded Super strong Ended up getting two genes There were trials and you got rewards based on how well you did I really hope someone can help me. Also he was part of the human race. And he was trying to help others survive against others.
Is sounds like it has Genetic Modifications and/or Evolution Tag. Try searching for these Tags, there aren't many Novel with them, maybe you can find your Novel like this.