It Reaches The Sewer Walkthrough - Chapter 3 Guide
The Sewer chapter walkthrough for It Reaches: objectives, multi-step puzzles, the first family collectibles, DanQ8000 timestamps, and tips.
It Reaches Guide Team
Chief Archivist
2026-07-30 (updated 2026-09-08)
6 min read
Difficulty: High
Verification: Community reportedLast reviewed: 2026-09-08
Verification: Community reportedLast reviewed: 2026-09-08Based on the current Steam version of It Reaches.
Quick Answer
The Sewer is where It Reaches descends deeper underground. This chapter contains multi-step environmental puzzles, the first family collectibles tied to achievements, and more aggressive enemy patrols. Based on full-game walkthrough timestamps, several collectibles appear here and in the following Sewer Hideout.
3
Chapter 3: The Sewer
Missable ContentEstimated Time
60-80 min
Difficulty
High
Overview
The Sewer takes you beneath the prison and hospital into flooded tunnels and maintenance areas. Based on DanQ8000's chapter markers, this chapter runs from approximately 1:45:26 to 2:52:55. Puzzles become more complex, the entity threat increases, and several missable collectibles are hidden in side areas.
Objectives
- Navigate the flooded sewer tunnels and maintenance areas.
- Solve multi-step environmental puzzles to unlock deeper sections.
- Find the first family collectibles (some tied to achievements).
- Reach The Sewer Hideout.
Key Puzzles
The Sewer introduces harder environmental puzzles: valve routing, power restoration, and possibly the first code locks. Exact solutions are published on the puzzle pages once verified against footage.
Danger Areas
- Flooded corridors that slow movement and limit escape routes.
- Tight tunnels with few hiding spots.
- Enemy patrols that become more aggressive in deeper sections.
Collectibles
- Toy Police Car tied to the "Bring your child to work" - Day achievement.
- Photograph of the family dog tied to the Fetch! achievement.
- Documents explaining the facility's underground history.
Tips
- Explore every side passage before moving to the next main area -- collectibles are missable.
- Save before major puzzle sequences and before entering the Sewer Hideout.
- Use sound cues to detect nearby enemies in flooded sections.
Evidence Note
Chapter 3: The Sewer -- estimated 60-80 min, difficulty High.
Chapter boundaries are based on chapter markers visible in community walkthrough footage (single source, not officially confirmed). We do not publish unverified room names, codes, or exact steps.
What's Next
Sources & Disclaimer
Sources
- Steam store page for It Reaches (App ID 4119360)
- DanQ8000 full gameplay walkthrough chapter timestamps
- wolker4 100% walkthrough collectible timestamps
- Steam Community global achievement statistics
Last reviewed: 2026-09-08
Unofficial Fan Guide
This guide is an unofficial fan resource and is not affiliated with, endorsed by, or sponsored by Emberflight Games or Perp Games. All game names, characters, screenshots, and trademarks are property of their respective owners. Chapter structure and guide details are based on the current Steam description and community sources; exact content is being verified as the full release becomes available.
Evidence note
Chapter boundaries follow chapter markers in DanQ8000's full-game walkthrough (community source, not officially confirmed). Collectible routes and puzzle solutions are published only after verification.
