Just another generic power escalation shounen, full of cliches and devoid of originality.
All of the characters fit into standard shounen tropes, formula and action follow shounen tropes, like in every other shounen friendship, honor and bravery are escalated to values above everything else.
Most of the supporting cast exists only to highlight how awesome, strong and brave Gon is, usually in their thoughts - "His potential is limitless", "In his eyes I could only see unwavering resolve", "He's already stronger than I am", "He progressed this much in just four days...", etc.
Another big fault is that it has no consistency, internal logic, or anything of the sort - characters act on impulse all the time, making everything random, unpredictable and just dumb, they keep overcoming their limitations with their will or resolve, making strengths of anything irrelevant, a dumb kid who barely trains bests people who trained for their whole lives because what? Just because he's the main character so he needs to be strong! Also, he's a kid of a super strong guy so he's also super strong. He's also kind, friendly, trusting, loved by animals, cute, fast learner.... you get the idea.
If it's your first shounen ever then you might like it. You might also like it if you're 11-13 years old. Otherwise I don't recommend reading it since you will only be disappointed. 3/10 is the most I can give it.