This manga is full of meaningless killing at least give him a reason to brutally murder like for survival or revenge or he's been controlled and forced to kill
Just think about it. Why just the right arm? I mean theres a lot or low golem and you can get powers prom one then what if make your all 4 limbs golem like and if low golem's fragments can give that much power how about higher tier golems?
The mc is not unique he's dumb. He need to level up but cant cause he cant deal damage so he need to join a party and share the exp which resulted in slow leveling
Honestly I dont like dramabut this is great. Its perfectly balanced between action fantasy drama and slice of life. Every events developed the mc and you can learn lessons too so overall its great.