1. The opening title sequence uses music to establish the start of the film and capture the audience's attention. Sound effects like a gunshot and sirens further engage the audience. 2. The gunshot sound effect was changed to be louder and more dramatic with an echo to signify the fate of the character being shot. 3. The opening sequence was filmed at two locations, a housing estate and mansion, to contrast wealthy and poor areas and give the impression of multiple times and places to appeal to a wider audience. 4. Camera movements like handheld shots create unease while tripod shots imply ease. Editing switches between characters and locations and introduces new people to pull the audience in.