CONTAINS SPOILERS!!!Duel was an exciting show to engage in and I felt it had a satisfying ending. What I LikedYang Se-jong’s performance as both clones was very good. I could definitely tell the difference between the two. Sung Joon had a kindness about him and was determined to help Deuk Cheon find his daughter. Sung Hoon, on the other hand, was damaged due to the experiments he endured as a child and being separated from his brother. That creepy smile he had was really chilling. He was unpredictable and at times delusional, killing people without remorse, but was sacrificed himself in the end.I really felt for Deuk Cheon’s character and was rooting for him to find his daughter. He made a lot of dangerous decisions that could have cost him his life, but it was understandable since he was in a distressing situation. I liked the bond that he and Sung Joon shared and felt it was built-up well throughout the show. Sung Hoon’s inner turmoil was interesting to witness, and I would love to do an in-depth character analysis of him because I felt he was a complicated and complex character with different sides. He wasn’t just the average villain without a reason for what he was doing. He exuded this calm exterior at times but, as the show goes on, he becomes more and more agitated to the point where it seems he's lost his sense of reality. The suspense was well done, and I found myself binge watching to see what would happen next. The music wasn’t very memorable, but it did serve its purpose, which was to pull the viewer into the chaos that was happening to the characters. I liked the clone storyline and felt invested in it along with the characters. Everything was revealed at a good time and it didn’t feel at all draggy. What I Didn’t Like The underground fighting part seemed a little chaotic and disconnected but it did serve to bring Sung Joon and Mi-rae together. Later in the show, I felt it was a little dramatic that Mi-rae pushed her mother aside and then just stood there to get hit by the motorcycle. This seemed obviously done so that she would be hurt enough to reveal how well she could heal. I just felt she had time to leap out of the way with her mother rather than just stand there to get hit, but maybe that’s just me.Other than this though, I really enjoyed the show. It wasn’t much I didn’t like. Would I Rewatch? Yes, definitely! It’s a show I would watch from the beginning after a few years. I would say it's one of my favorite chase/suspense dramas so far.