MC is from a world where people have super powers or something, and his power is being able to obtain other powers/abilities by eating body parts from other beings with powers. He is stabbed by a crazy bitch and dies. He then wakes up as a baby goblin, the next day he grows up to a pre-teen goblin and goes out to the woods to hunt, he befriends a dumb goblin (most of them are dumb but this one is especially dumb) and they form a team to hunt unicorn rabbits, the MC is the brains, the dumb goblin is the muscle, they take down rabbit after rabbit, they are unsopable, boy do they shine on the battlefield. The MC fashion a prison shiv out of rabbit horn, attains some useless skills from eating the rabbits and then befriends a female goblina who is basically his biggest fan, who'd have guessed the first female lead is going to be all over the mc? They keep killing, getting abilities, fashioning better weapons and armors, they evolve into hobgoblins, and that's where the manga gets it's success from, monster evolution (rip off pokemon much?).
And that's literally all there is to it, they just keep killing and evolving and eating and getting better weapons till they are literally gods. Oh there's also goblin rape, but the girls eventually like it because the MC is a literal god, so it's ok.
