| 1 | Weishim Office Building | Investigate the first serial murder and pursue Serial Killer X. | Introduction to combat, crime scene investigation, and forensic tools. |
| 2 | Central Metro Station | Track evidence through the abandoned metro station. | First major crime scene investigation, hostile scavengers. |
| 3 | Metro Station Platforms | Continue pursuing the suspect through the subway platforms. | Close-quarters combat, train hazards. |
| 4 | Grid 4 Subway Tunnels | Search the underground tunnels for clues. | Dark environments, navigation, forensic investigation. |
| 5 | Bart’s Department Store | Investigate disappearances inside the department store. | Iconic mannequin encounters, psychological horror. |
| 6 | Burnback Alley | Follow new leads through abandoned streets and buildings. | Short transitional chapter with heavy combat. |
| 7 | Metro City Library | Investigate the library for evidence connected to the murders. | Large interconnected environment, forensic puzzles. |
| 8 | St. Joseph’s Secondary School | Search the abandoned school for clues. | One of the game’s longest and most atmospheric levels. |
| 9 | Apple Seed Orchard | Track the investigation to the orchard property. | Outdoor environments, escalating story revelations. |
| 10 | Apple Seed Orchard Processing Center | Confront the conspiracy and hunt the final suspect. | Final investigation, boss encounter, ending. |