Angel Engine's recorded operation milestones run from operation one through operation five, but the sources do not provide a complete tool-by-tool completion route. This walkthrough organizes the available milestones, patient-treatment tasks and password questions from the records reviewed on 2026-09-20. Exact operation prerequisites, recovery steps and the final-operation route remain To be confirmed.
Version and verification boundary
Source verification date: 2026-09-20. The official news feed documents updates, so compare your build and platform before relying on a checkpoint, control observation, or recovery note. No current-build route has been independently reproduced for this guide.
The official store says operations add complexity and that time matters before a patient wakes. It does not publish the full operation order or a completion procedure.
Operation-order reference
This table orders the named completion milestones by their operation number. Each condition is transcribed from the official Steam achievement list. It is not a claim about all operations, intervening events, or unlock prerequisites.
| Named milestone | Official achievement | Official description | Procedure status |
|---|---|---|---|
| One | Operation one | Complete operation one | Tool order and prerequisites unverified |
| Two | Operation two | Complete operation two | Tool order and prerequisites unverified |
| Three | Operation three | Complete operation three | Tool order and prerequisites unverified |
| Four | London time | Complete operation four | Tool order and prerequisites unverified |
| Five | Operation five | Complete operation five | Tool order and prerequisites unverified |
These five named completions do not establish a total operation count. In particular, the separate final-operation community report below does not fill in the missing route.
Procedure checkpoints
The official description establishes patient treatment with a mechanical arm, treatment minigames, and unreliable equipment. Use the current in-game prompt and manual to identify the active procedure; an achievement name alone does not supply its controls.
The The Pooh full playthrough is independent observation of a play session. It can help compare a visible checkpoint, but its exact build, inputs, and reproducibility still require checking. This guide does not assign unverified timestamps, infer missing inputs, or convert the video into an official route.
For the named minigames and official conditions, see the surgery reference.
Account and password gates
The official achievements list “Master of Passwords” with “Log into all accounts in the game” and “The Lord once stood by the shore” with “Type secret Papal code into login screen.” Those descriptions establish account and login tasks, but do not disclose the account list, values, locations, or an operation-gating sequence.
Use the password evidence table for the two qualified community reports. No login value is presented here as an official prerequisite for progressing through the numbered operations.
Failure recovery
The achievement list confirms failure conditions; it does not document which actions preserve progress or recover a stalled procedure. A universal restart, retry, or equipment-reset method is unavailable in the reviewed evidence.
Record the active operation, build, platform, and visible prompt before comparing an observed failure with your own. A remedy from a different build remains unverified until reproduced under matching conditions.
Final-operation and ending boundary
Spoiler warning: the linked community discussion concerns a reported final operation and hidden achievement.
A Steam discussion participant associates a numeric in-game puzzle input with a final operation and a hidden achievement. This is a community report; prerequisites remain unverified, and the discussion does not establish a complete ending route or current-build validity.
The password page retains the input's context and uncertainty. No ending outcome, hidden unlock sequence, or relationship to the total operation count is asserted here.