1. He needs meat to feed his Gu (basically this story's version of pokemon). He stumbles upon a hunter's trap and finds a boar. The hunter sees him and says "How dare you steal my meat?" MC kills the hunter with the excuse that "he angered me", a typical excuse that the arrogant young master type characters use in other novels. He drags the body to the hunter's home, tells the hunter's father living there that "I've killed your son for angering me. Give me a map of the surrounding area to appease my anger". After the old man does exactly as he wishes, the MC cuts off his head and kills the hunter's teenaged sister.
2. The MC and his team kill a powerful beast. A swarm of wolves approach. All but him and one of the female teammates flee. The MC immediately knocks out his teammate, cuts open the dead beast, and crawls inside like Luke Skywalker did to the tauntaun. He uses his teammate as a shield so that when the wolves start to feast on the dead beast, they end up eating her instead of finding him.
3. In the middle of a large battle, a 15 year old healer girl with cliche healer traits (she's pretty, sweet, caring) is separated from her clansmen. The MC saves her as she is about to eaten by wolves. She is about to thank him, but then he knocks her out and brings her to a secret cave. He wakes her up, then commands his slave bear to eat her, and the bear leaves nothing left of the girl but her brain and intestines. But the MC forces the bear to eat EVERYTHING, and then throws a poison Gu, a fire Gu, and some explosives into the bear's mouth and forces it to eat that as well. Then he kills it and does some secret ritual to create/refine some evil Gu. This one was pretty sick, the author goes into detail describing how the bear took chunks out of her chest, ate her breasts, etc.
4. The MC has kidnapped a village leader's young son and daughter and blackmails his way into a secret cave (not the same one as above), where he finds a Gu that requires two people to offer blood to refine and retrieve it. He forces the two children to strip and then kicks them into the furnace. The author describes them quite vividly screaming in pain as they burn, and as the kids try to crawl out of the furnace, the MC is described kicking them back into the flames 3-4 times before they melt from the heat.
There was a strong start, a strong middle, and a pathetically weak end.
The story goes along great until the last 5 or so chapters. He fights 3 "boss" type characters. The first two fights ended in a single sentence. The last boss fight lasts one chapter, and the MC says "You shall die" at the end. The next chapter is the epilogue. Basically, the author skipped over the actual defeat of the last boss.
The ending is extremely rushed and comes off very unsatisfying. Overall, I liked how it progressed, which is why I gave it a 3/5. If not for that, the ending alone deserves a 1/5.