Let me first talk acting:
• I think a lot of the actors/actresses acting made me embarrassed in this second part, where everyone was shouting for no reason at times, or laughing hysterically in place where they are supposed to convey emotions.
• The female lead generally has one facial expression. I know that the character of Moon Dong Eun our female lead, doesn't have much reason to be happy in life but there are different flavours to acting than just staring plainly in every scene.
• The male lead (which was completely unnecessary and a character just created to add romance where romance wasn't necessarily needed) only knew how to act cute, even in front of Dong Euns enemies he can't help himself but act cute.
• That said both main leads need acting classes.
• The supporting actors were far more better, for example Kang Hyeon-Nam played by Yum Hye-Ran, the housewife with an abusive husband had more acting skills than the two of them combined.

Onto the storyline:
• I hated how slow it took, it took 8+ episodes for the revenge to really start off and when it did it was terrible slow.
• The villians forget to use their thugs when it comes to the female lead, Park Yeon-Jin who has killed twice does not even try to kill her even when she threatens to bring her child into her revenge plan.
• There was more chemistry between the FL and Park Yeon-Jin husband than between the male lead and her, and they didn't even intend to happen.
• I found the female leads mother to be a bad actress, her acting was exaggerated and didn't feel real enough.
• The plot twist of suddenly turning Park Yeon-Jin husband into a killer just so that the drama summarizes does not make sense, what we know of his character is that he is an organized businessman, someone who uses his brains and not his fist.
• The script writers were extremely lazy on that one.
• I recall the FL promising to kill Kang Hyeon-Nam husband in exchange for her help, but the poor woman had to do it herself, she promised to help teach her child and she does that, but instead she sends her abroad and tells the mother she can't go with her.
• If I also recall, the FL had abundance money at the end of the show and since they were done with revenge she could have let her meet up with her daughter.
• The shaman story wasn't properly concluded, they were never exposed by the public so young girls will still be fooled into going there. The FL knew but I guess it wasn't her buisness since she's not part of the revenge.
• The female lead just had so much good luck in her revenge, people from all sides kept popping up to help her. Where were all these people many years ago?
• The ML dropping his whole life to help her didn't make sense when he barely even knew her. That last speech of ML mother saying FL saved her son was... strange, because it's been him helping her in her revenge, funding the revenge, stalking her to join he revenge even when she was but a stranger.

Did I regret watching? No
Would I rewatch this? Also no.