Guides
Every guide for It Reaches in one place: puzzles, achievements, collectibles, the chapter walkthrough, and endings. Each claim is labeled Verified, Community reported, or Unverified.
Every claim is labeled by evidence level: Verified, Community reported, or Unverified. We do not publish guessed codes, locations, or unlock conditions.
- Puzzles & codes
- All 20 achievements
- 5 collectibles
- 5-chapter walkthrough
- Ending status
- Evidence-labeled claims
What will you find here?
Stuck somewhere? Start with the Puzzles & Codes hub if you need a specific solution, check Achievements for unlock conditions and missable warnings, or use the Walkthrough to figure out where you are and what to do next.
Complete Guides
Organized by topic so you can find the exact help you need.
Get Unstuck
Puzzles & Codes
One page per puzzle: what it is, where it is, and the solution once verified. Unverified codes are never published.
Achievements
All 20 Steam achievements: official names, descriptions, global unlock rates, missable warnings, and per-achievement detail pages.
Collectibles
The five family collectibles: which chapter, where to look, and which achievement each one unlocks.
Progression
Walkthrough
Chapter-by-chapter progression for the five chapters seen in full-game walkthrough footage, with objectives, missables, and next-step links.
Chapter 1: The Hospital
Opening chapter: body camera basics, the hospital interior, and the Trespassing achievement.
Chapter 2: The Basement
Escape the prison, recover your pistol, and survive the first enemies.
Chapter 3: The Sewer
Flooded tunnels, valve and power puzzles, the shotgun, and two family collectibles.
Chapter 4: The Sewer Hideout
William Blake's hideout, the remaining three family collectibles, and the hardest puzzles.
Chapter 5: The Organism
The final chapter: the last encounter, ending sequence, and remaining achievements.
Endings
What is actually known about the endings — and what is still unverified. No invented ending names.
Recommended Reading Order
Stuck on a puzzle
Go straight to the puzzle list and find the exact page for where you are stuck.
Hunting achievements
Check missable warnings before each chapter transition.
Missing a collectible
See which chapter each family item is in and grab it before the point of no return.
Progressing the story
Chapter-by-chapter objectives, danger areas, and next steps.
Frequently Asked Questions
What is this site for?
It Reaches Guide is a problem solver: one page per puzzle, achievement, or collectible. Every claim is labeled Verified, Community reported, or Unverified.
How many chapters does It Reaches have?
Five chapters are visible in full-game walkthrough footage: The Hospital, The Basement, The Sewer, The Sewer Hideout, and The Organism. These names are community-reported, not officially confirmed by the developer.
Why don't you list exact puzzle codes?
We only publish codes verified against evidence. Until a code is confirmed, the page says so instead of guessing.
Sources & Disclaimer
Sources
- Steam store page for It Reaches (App ID 4119360)
- Steam Community global achievement statistics
- DanQ8000 full gameplay walkthrough (chapter structure)
Last reviewed: Sep 8, 2026