The Amidst The Evil Side Quest went live on October 9, 2026, and finishing it unlocks the game’s 3 hidden achievements and Ending 3. However, the developer has not published how to start the quest or what its steps are, so no verified walkthrough exists yet. Three later patches fixed its biggest problems, including the Entity’s health after you cleanse 7 Corrupts and a padlock code that failed to sync for clients. As of October 18, 2026, the latest update I found is the October 13 Handmark fix.
Summary: Amidst The Evil Side Quest
- Launch: the Side Quest went live October 9, 2026, one day after the game’s October 8 release.
- Reward: completing it unlocks the 3 hidden achievements and Ending 3.
- Price and players: $3.99 on Steam, built for 1 to 4 players, and you can also play solo.
- Cleansing 7 Corrupts: the October 10 patch adjusted the Entity’s max health at that point, and it also tuned its speed at higher levels.
- Padlock code: clients now see the code, and a failed sync shows a question mark instead of the number.
- Latest patch: Handmark Fix on October 13, 2026.
- Not confirmed: how to start the Side Quest, the three hidden achievement names and the exact health and speed numbers.
What the Side Quest is
Amidst The Evil is a co-op horror game from the solo developer ViktorNR. You and your friends complete a ritual and solve puzzles while a malevolent Entity hunts you. It launched on Steam on October 8, 2026 for $3.99.
The Side Quest is an extra challenge added a day later. The October 9 patch notes say it gives you two things: the 3 hidden achievements and Ending 3. Those are the only rewards the developer has confirmed.
The notes also reveal pieces of how the quest works. It uses Corrupted objects, a final circle, a ritual with an interaction hint near the end, and a final cutscene. A Cassette also sells in the in-game store, and the developer adjusted its price. The developer has not explained how you begin the quest, so I will not guess at it.
Patch timeline
The game changed fast in its first week, so the order matters:
| Date | Update | What changed |
|---|---|---|
| October 8 | Small Fixes | Host-only achievements fixed, clearer Notes and a padlock keybinding hint added |
| October 9 | Side Quest is now Live | Side Quest added, match timer added and padlock sync fix shipped |
| October 10 | Side Quest fixes | Entity health after 7 Corrupts, final circle and achievement fixes |
| October 11 | A Few Tiny Fixes | Side Quest achievement now grants correctly |
| October 13 | Handmark Fix | Handmark recovery fix and more Notes |
If you played before October 11, your Side Quest achievement may not have unlocked. The October 11 note says completing the quest did not grant its achievement, and the developer fixed it.
Ending 3 and the 3 hidden achievements
Steam lists 17 achievements, and it shows 14 of them. The other 3 stay hidden until you unlock them, and the developer says the Side Quest unlocks those 3. The names and conditions are not published anywhere I could find. Therefore, this article cannot list them.
The same goes for Ending 3. The store page promises that the story has more than one ending, but no source describes the endings in detail.
The 14 visible achievements show what the game expects from you:
| Achievement | Condition |
|---|---|
| Kneeled | Get downed by the Entity |
| 6 Feet Over | Complete the Ritual at the Cemetery |
| Lustrous | Complete the Light Puzzle |
| Death Can Wait | Revive a downed teammate |
| Pop the Cork | Break the elemental seal of a Corrupted object |
| Eradicated | Cleanse a Corrupted object |
| Make Restitution | Get a stolen item back |
| Just A Guy | Complete the Main Ritual without dying and without having an item stolen |
| Damnation | Lose the game |
| Virtuoso | Play the correct melody at the Piano |
| Unrivetted | Complete the Padlock Puzzle |
| Overthrown Malediction | Complete the Main Ritual |
| Catch Me If You Can | Complete the Main Ritual in less than 20 minutes |
| Moronic Strategy | Complete the Main Ritual without doing anything |
A patch also fixed a Blackjack achievement, so the game includes a Blackjack minigame with a Dealer. The developer has not shared how to reach it.
Padlock code desync fix
The padlock puzzle caused the most confusion in week one. The October 8 notes listed a known issue: clients sometimes could not see the correct Padlock code. The October 9 patch then changed how the code displays.
Here is what the fix does:
- The code now shows for both clients and the server. Everyone should see the same number.
- A failed sync shows a question mark. If a number does not sync, the client sees a ? where the number should be, instead of a wrong value.
That makes the problem easier to spot, though the notes do not promise it never happens. If you see a question mark, ask a teammate to read the number aloud, and keep the Notes handy, because the developer also rewrote some Notes to give clearer clues. Nobody has published the actual code values, so I will not list any.
The October 8 patch also added a hint for the keybinding that enters the combination, so look for the on-screen prompt at the padlock.
Cleansing 7 Corrupts and the Entity
The October 10 patch includes two Entity changes that matter for the Side Quest:
- Max health after cleansing 7 Corrupts. The developer adjusted it, so the Entity behaves differently once you reach that count.
- Speed multiplier at higher levels. The developer also tuned how fast the Entity gets as the quest escalates.
The notes give no numbers, so expect the Entity to change after your seventh cleanse and plan for it. One player review describes the Entity as sprinting at you, and another says the purple light stun takes too long, so use the stun early. Those are player opinions, not official values.
Co-op ritual tips
The game suggests a team approach through its achievements and design. Here are practical ways to use that:
Split the jobs. The Piano melody, the Light Puzzle, the Padlock and the Corrupted objects are separate tasks, so assign one to each player.
Revive fast. Death Can Wait exists because teammates can recover you, and the October 8 patch let downed players use Push to Talk, so keep talking.
Guard your items. The Entity steals items, and two achievements reward getting one back or finishing without a theft.
Mind your medkits. Two reviewers say medkits run short, and one wants downed players to drop items. That is feedback, not a confirmed mechanic.
Keep the group at four. The developer built and tested the game for up to 4 players. A host can start a match with up to 8, but the developer warns it may cause balance issues and bugs.
Steam lists these PC requirements:
| Minimum | Recommended | |
|---|---|---|
| OS | Windows 10, 64-bit | Windows 10, 64-bit |
| Processor | AMD Ryzen 3 | AMD Ryzen 5 |
| Memory | 8 GB RAM | 16 GB RAM |
| Graphics | NVIDIA GTX 970 | NVIDIA GTX 1660 |
| DirectX | Version 12 | Version 12 |
| Storage | 7 GB | 7 GB |
Playing with others needs an internet connection.
Tips and common mistakes
Do not confuse it with Amid Evil. Amid Evil is a separate retro shooter, and its achievement guides will not help here.
Update before you play. The Side Quest got fixes on October 10, 11 and 13.
Do not trust a padlock code list. No source publishes the values, and the Notes in your game give the clues.
Do not expect a walkthrough yet. The developer has not said how to start the Side Quest.
Replay the Side Quest if your achievement is missing. The October 11 fix means a new completion should grant it.
If you like puzzle-heavy horror, our Tenebris Somnia guide covers another recent survival horror release, including its puzzles and PC requirements.
What could change
ViktorNR is patching the game often, so the Side Quest, the Entity’s numbers and the Notes can change again. Everything here is accurate as of October 18, 2026, based on the developer’s Steam patch notes, the Steam achievements page and player reviews. Check the Steam news page for newer updates.
Conclusion
The Side Quest unlocks Ending 3 and the 3 hidden achievements, but the developer has not shared its steps. Update the game, watch for a question mark at the padlock, and expect the Entity to change after you cleanse 7 Corrupts. Treat any walkthrough that lists exact codes or hidden achievement names as unverified.
FAQs
What does the Amidst The Evil Side Quest unlock?
It unlocks the 3 hidden achievements and Ending 3.
How do I start the Side Quest?
The developer has not said, so no verified method exists yet.
What are the 3 hidden achievements?
Steam keeps them hidden, and no source lists their names.
Why does the padlock show a question mark?
The code failed to sync for you, so ask a teammate to read the number.
What changes after cleansing 7 Corrupts?
The developer adjusted the Entity’s max health at that point, but it did not publish the numbers.
How many players can join?
The game is built for up to 4 players, and a host can start a match with up to 8.
For more updates visit: GAME SPEC
