This is a gritty movie about espionage during war time.

Good:
1. The fight scene between WYB and Tony Leung's characters
2. the plot twist
3. WYB's acting improved as the story went on. He was a bit wooden in the early scenes.
4. The build up and suspense. It always felt like your favorite character was in danger of getting killed
5. The set design and costumes really made one feel that they were present in that time

Bad:
1. Non linear story telling made it really difficult to follow the plot
2. No linear story telling device also made some of the scenes repetitive for viewers