It Reaches Walkthrough - Complete Chapter Guide
A full chapter-by-chapter walkthrough for It Reaches. Covers the five main chapters with official timestamps from a full-game walkthrough, plus objectives, puzzles, danger areas, collectibles, and tips.
It Reaches Guide Team
Chief Archivist
2026-07-29 (updated 2026-07-31)
12 min read
Difficulty: Medium
Verified GuideLast reviewed: 2026-07-31
Verified GuideLast reviewed: 2026-07-31Based on the current Steam version of It Reaches.
Quick Answer
It Reaches has five main chapters: The Hospital, The Basement, The Sewer, The Sewer Hideout, and The Organism.
These names and timestamps are based on the chapter markers visible in DanQ8000's full-game walkthrough. This guide provides the chapter order, expected puzzle progression, survival tips, and links to detailed puzzle and achievement guides. Room-by-room steps will be added as we verify more footage.
Before You Start
Estimated Time
3-5 hours
Difficulty
Medium
Missables
- Documents and collectible notes in The Sewer and The Sewer Hideout
- Ending-determining choices in The Organism
- Some achievements tied to collectibles and specific deaths
Endings
Multiple endings may exist based on choices and collectible progress. Details are in the Endings Guide.
Achievements
20 Steam achievements total. Several are missable or chapter-specific.
Spoiler Warning
This walkthrough contains story and progression spoilers. Read only as far as you need, and check the Puzzle Solutions page if you want to solve specific sections yourself.
Chapter Overview
| Chapter | Playtime | Puzzle | Boss / Set-Piece | Collectibles | Difficulty |
|---|---|---|---|---|---|
| The Hospital | 10-20 min | Tutorial | None | Documents | Low |
| The Basement | 70-90 min | Environmental | Minions / big hand | Documents, supplies | Medium |
| The Sewer | 60-80 min | Valve / power | Entity chase | Toy Police Car, dog photo | High |
| The Sewer Hideout | 70-90 min | Multi-step | Major set-piece | Toy Carousel, drawing, football | Very High |
| The Organism | 15-25 min | Final puzzle | Final encounter | Ending items / last achievement | High |
1
Chapter 1: The Hospital
Estimated Time
10-20 min
Difficulty
Low
Overview
The Hospital is the opening chapter of It Reaches. It introduces officer Jason Thompson, the body camera perspective, and the abandoned hospital setting. Based on DanQ8000's chapter markers, this chapter runs from approximately 9:02 to 22:54 in a full playthrough. It sets up the routine police operation that quickly becomes a nightmare.
Objectives
- Enter the hospital building and earn the Trespassing achievement.
- Learn the body camera controls, flashlight, and interaction systems.
- Explore the opening hospital area for documents and supplies.
- Reach the transition point to The Basement.
Key Puzzles
The Hospital contains introductory environmental puzzles: finding keys, restoring light sources, and opening locked doors. Exact room names and code solutions are being verified against walkthrough footage.
Danger Areas
- Dark corridors without flashlight backup -- conserve battery.
- Areas where the entity makes its first scripted appearances.
Collectibles
- Documents that introduce the hospital's history.
- Supplies and optional notes near the starting equipment.
Tips
- Move slowly and pan the camera often; the body camera hides threats in your blind spots.
- Pick up every document -- they often unlock achievements and puzzle hints.
- Save as soon as the game allows manual saving.
Chapter Summary
Chapter 1: The Hospital -- estimated 10-20 min, difficulty Low.
Focus on Enter the hospital building and earn the Trespassing achievement.. Detailed room-by-room steps are being verified against the full release and will be added as soon as possible.
2
Chapter 2: The Basement
Estimated Time
70-90 min
Difficulty
Medium
Overview
The Basement is the longest individual chapter, running from approximately 22:54 to 1:45:26 in DanQ8000's playthrough. It moves the action into a prison-like underground area where you earn Escape Artist, Happy Reunion, and encounter the first enemies.
Objectives
- Escape the prison area and earn the Escape Artist achievement.
- Retrieve your pistol and earn the Happy Reunion achievement.
- Survive the first minion attacks and learn knife/weapon use.
- Reach the transition point to The Sewer.
Key Puzzles
The Basement focuses more on combat and evasion than puzzles. Expect door locks, key searches, and environmental traversal.
Danger Areas
- Prison cells and narrow corridors with limited escape routes.
- Areas where minions first appear in numbers.
- Dark sections where the big hand enemy can grab you.
Collectibles
- Documents about the facility's history.
- First weapon upgrades and supplies.
Tips
- Use your knife when a minion grabs you to earn Sharp Senses.
- Conserve ammo early; the pistol is limited until you find more supplies.
- Watch for the big hand enemy that triggers the Touchy Subject death achievement if it kills you.
Chapter Summary
Chapter 2: The Basement -- estimated 70-90 min, difficulty Medium.
Focus on Escape the prison area and earn the Escape Artist achievement.. Detailed room-by-room steps are being verified against the full release and will be added as soon as possible.
3
Chapter 3: The Sewer
Missable ContentEstimated Time
60-80 min
Difficulty
High
Overview
The Sewer runs from approximately 1:45:26 to 2:52:55 in DanQ8000's playthrough. This chapter moves into flooded underground tunnels, introduces harder environmental puzzles, and contains the first family collectibles.
Objectives
- Navigate the flooded sewer tunnels and reach the next section.
- Solve valve and power-routing puzzles to open gates.
- Find the shotgun and earn the Armed and Ready achievement.
- Collect the first family items tied to achievements.
Key Puzzles
Expect valve-turning, breaker routing, and gate-opening puzzles. The sewer setting often requires draining water or restoring power to progress.
Danger Areas
- Flooded sections that slow movement and limit escape options.
- Open tunnel sections with few hiding spots.
- Puzzle rooms where water levels or enemy patrols create pressure.
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 about the facility's underground history.
Tips
- Explore side paths before opening major gates; some collectibles are missable.
- The shotgun makes combat easier but ammo remains limited.
- Save before long puzzle sequences or before leaving large areas.
Chapter Summary
Chapter 3: The Sewer -- estimated 60-80 min, difficulty High.
Focus on Navigate the flooded sewer tunnels and reach the next section.. Detailed room-by-room steps are being verified against the full release and will be added as soon as possible.
4
Chapter 4: The Sewer Hideout
Missable ContentEstimated Time
70-90 min
Difficulty
Very High
Overview
The Sewer Hideout runs from approximately 2:52:55 to 4:09:41 in DanQ8000's playthrough. It is the late-game chapter where the story converges: you reach William Blake's Hideout, collect the remaining family items, and unlock the path to The Organism.
Objectives
- Reach William Blake's Hideout and earn the Science and History achievement.
- Collect the remaining family collectibles tied to achievements.
- Solve the chapter's hardest environmental puzzles.
- Reach the transition point to The Organism.
Key Puzzles
Expect the game's most complex environmental puzzles in this chapter, possibly including the cage lock and code door referenced by players. Exact solutions are being verified against walkthrough footage.
Danger Areas
- William Blake's Hideout and the surrounding experiment rooms.
- Areas with the Venus Hand Trap and big-hand enemies.
- Timed or multi-step puzzles that leave you exposed.
Collectibles
- Toy Carousel tied to Round and round we go.
- Son's family drawing tied to In good hands.
- Worn Football tied to A great team!
Tips
- Check every side room before entering The Organism; several collectibles are missable.
- Use the shotgun against groups of minions but watch ammo.
- Save before the final transition point.
Chapter Summary
Chapter 4: The Sewer Hideout -- estimated 70-90 min, difficulty Very High.
Focus on Reach William Blake's Hideout and earn the Science and History achievement.. Detailed room-by-room steps are being verified against the full release and will be added as soon as possible.
5
Chapter 5: The Organism
Missable ContentEstimated Time
15-25 min
Difficulty
High
Overview
The Organism is the final chapter, running from approximately 4:09:41 to 4:28:54 in DanQ8000's playthrough. It contains the game's conclusion, final encounter, and ending sequence. Any remaining achievements are usually unlocked here or just before the credits.
Objectives
- Reach the final area of the underground facility.
- Complete the final puzzle or environmental sequence.
- Survive the final encounter and make ending-determining choices.
- Watch the ending and return to the main menu.
Key Puzzles
The final sequence may include an environmental escape, such as the rising liquid segment seen in walkthrough footage. Exact steps are being verified.
Danger Areas
- The final encounter area where the entity is most aggressive.
- Any sequence where you must choose between escape and confrontation.
Collectibles
- Ending-specific documents only available in this chapter.
- Final achievement triggers tied to choices.
Tips
- Make a manual save before entering the final sequence.
- Check your document and item inventory before the final choice.
- See the Endings Guide for how to unlock each outcome.
Chapter Summary
Chapter 5: The Organism -- estimated 15-25 min, difficulty High.
Focus on Reach the final area of the underground facility.. Detailed room-by-room steps are being verified against the full release and will be added as soon as possible.
What's Next
Puzzle Solutions
All Puzzle Combinations
Step-by-step solutions for every chapter puzzle and code.
Endings Guide
Unlock Every Ending
Requirements for the normal, secret, and true endings.
Achievements
All 20 Steam Achievements
Missable warnings and unlock conditions for every achievement.
Story
Story & Lore Breakdown
Characters, setting, and the dark mystery behind the hospital.
Sources & Disclaimer
Sources
- Steam store page for It Reaches (App ID 4119360)
- DanQ8000 full gameplay walkthrough chapter timestamps
- Steam Community global achievement statistics
Last reviewed: 2026-07-31
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.
Detailed steps coming soon
We are verifying exact room names, item locations, and puzzle solutions against full-game walkthrough footage. The chapter structure above is based on chapter markers from DanQ8000's community walkthrough.
