Ozonelayer
is he gonna be a murder hobo the whole novel from this chap moving forward? kinda likes the way he want to be strong but suddenly he became a murder hobo that kills for the luls he was killing animals/monsters cuz he gets either food or some type of benefit on the fight but he dont really gain anything substantial when killing weaklings :v if anything he could be getting insights or ideas sparring with them.
Although I don't like this type of MC I think you can improve on some things, just killing for the sake of killing can get boring very quickly, if I can give you a suggestion, we know that he wants to be on top of the world, to be the strongest, so something like king or emperor, so as a king he must have a pride that accompanies such obstinacy, and a "king" doesn't touch just anyone because he's above all these "inferior beings", so I believe you should develop his personality more and what he thinks about life, his change was very abrupt, he turned from a "normal" human into such a beast too quickly, if you had developed his personality before it wouldn't have been so discrepant