Mood: The mood of this video appears to be dark, intense, and vengeful. The theme seems to revolve around revenge, as hinted by the tagline 'Back with a vengeance...' and the title 'Hate Story 2'. The overall emotion conveyed is one of fierce determination and possibly violence.

Environment: The environment or setting of the video seems to be dark and possibly gritty, given the black background and the protagonist's attire, which includes a black leather jacket and a gun-shaped pendant. This suggests a possibly urban or contemporary setting with a focus on action or thriller elements.