All 25 Achievements
Every Steam achievement in The Adventures of HILLS with practical unlock notes. Event names follow the Micoco-style Event Witnessed numbering; conditions avoid heavy spoilers while giving you enough to route efficiently.
Story and Completion Achievements
| Achievement | Description | How to Unlock | Missable? |
|---|---|---|---|
| The Adventures of HILLS | Quest complete! Hills survived Gadola's crisis. | Finish the main story with any good or neutral ending. See Late Game. | No |
| Light in the Shadows | Uncover the full truth beneath Gadola. | Unlock the true ending. | Yes |
| The Clock Runs Out | Time has expired—the city closes in. | Trigger timer bad ending. | Yes |
| Every Stone Turned | Every ending path recorded in the gallery. | Register all unique endings on All Endings. | Yes |
| Chronicler of Gadola | Master record of Hills's journey—nothing left unseen. | Unlock all other 24 achievements. | Yes |
Event Witnessed Achievements (I–XX)
These unlock when you view the corresponding optional event. Numbers align with internal event IDs used by the gallery.
| Achievement | Description | Location / Hint | Earliest Day | Missable? |
|---|---|---|---|---|
| Event Witnessed I | Watch event 1 | Market District — tutorial alley encounter after first companion recruit | Day 2 | Yes |
| Event Witnessed II | Watch event 2 | Market — night stall chain if you bought the charm hint | Day 4 | Yes |
| Event Witnessed III | Watch event 3 | Slums — rusted badge follow-up in flooded cellar | Day 6 | Yes |
| Event Witnessed IV | Watch event 4 | Slums — arena spectator scene after first fight win | Day 7 | Yes |
| Event Witnessed V | Watch event 5 | Dockside — companion loyalty scene (evening) | Day 5 | Yes |
| Event Witnessed VI | Watch event 6 | Market — merchant betrayal clue if you eavesdrop | Day 8 | Yes |
| Event Witnessed VII | Watch event 7 | Micoco reunion #1 east gate | Day 5 | Yes |
| Event Witnessed VIII | Watch event 8 | Hidden alley behind spice vendor — requires AP after rain weather | Day 9 | Yes |
| Event Witnessed IX | Watch event 9 | Slums depth — patrol dodge failure (choose stay hidden) | Day 10 | Yes |
| Event Witnessed X | Watch event 10 | Aqueduct approach — pre-boss campfire with companions | Day 12 | Yes |
| Event Witnessed XI | Watch event 11 | Noble Quarter — garden side path with Silencing Charm | Day 12 | Yes |
| Event Witnessed XII | Watch event 12 | Noble Quarter — library restricted stack (scholar companion) | Day 13 | Yes |
| Event Witnessed XIII | Watch event 13 | Micoco reunion #3 — requires Ledger Fragment progress | Day 11 | Yes |
| Event Witnessed XIV | Watch event 14 | Veil Passage — optional ally introduction | Day 10 | Yes |
| Event Witnessed XV | Watch event 15 | Veil Passage — second visit with Subterranean Key | Day 13 | Yes |
| Event Witnessed XVI | Watch event 16 | Gala pre-party dressing room (companion present) | Day 14 | Yes |
| Event Witnessed XVII | Watch event 17 | Gala — balcony scene after investigation branch | Day 14 | Yes |
| Event Witnessed XVIII | Watch event 18 | Noble villa basement — post-gala key item delivery | Day 15 | Yes |
| Event Witnessed XIX | Watch event 19 | Finale week — companion pledge night (loyalty ≥ 80%) | Day 16 | Yes |
| Event Witnessed XX | Watch event 20 | True-ending exclusive epilogue coda — requires true route | Day 17+ | Yes |
Achievement Difficulty Tiers
Based on early Steam global stats (post-launch), approximate rarity tiers:
- Common (Day 1–5) — Events I, II, V, VII; most players hit these on a blind first run.
- Uncommon (Day 6–12) — Events III–VI, VIII–XI, XIII–XV; need district unlock awareness.
- Rare (Day 13+) — Events XII, XVI–XX; loyalty and key-item gated.
- Very Rare — Every Stone Turned, Chronicler of Gadola; full completion.
Farming Tips
- Keep a gallery save before Day 14 gala; several events chain from that night.
- Event XX only appears on true ending—do not expect it on a bad-ending cleanup file.
- Steam may batch-pop multiple Event Witnessed trophies if you load a late save with many scenes unseen.
- Consult Missables before skipping any evening district.
See Also
- Achievements Hub
- 100% Completion
- How to Find
- Micoco Connection — prequel achievement pattern
Event Witnessed Cluster Guide
Grouping events by district helps route AP efficiently during a 100% playthrough.
Market cluster (I, II, V, VI, VIII)
Complete Days 2–9 in Market and docks. VIII requires rain—check weather icon on the world map each morning. If rain is forecast, postpone Noble scouting until after the spice alley visit.
Slums cluster (III, IV, IX)
Requires depth unlock Day 6+. IX is stealth-only; reloading a failed loud path does not award the trophy even if you win the fight.
Micoco chain (VII, XIII, plus XVI–XX partial)
VII on Day 5 gates XIII on Day 11. Missing VII requires a full reload to Day 5—no catch-up dialogue exists.
Noble cluster (XI, XII, XVI, XVII, XVIII)
Silencing Charm mandatory. XII needs scholar companion in party when entering library stack.
Hidden cluster (XIV, XV)
Veil Passage two-visit sequence; Subterranean Key is non-negotiable for XV.
Finale cluster (XIX, XX)
XIX loyalty pledge and XX true epilogue close the set—plan true ending before hunting XX on a cleanup file.
Achievement to Ending Mapping
| Achievement | Related Ending | Notes |
|---|---|---|
| The Adventures of HILLS | GE-01 good ending | Any successful main quest close |
| Light in the Shadows | TE-01 true ending | Requires full checklist |
| The Clock Runs Out | BE timer bad | Mutually exclusive with GE-01 same run |
| Every Stone Turned | Gallery meta | All ending IDs, not all variations |
| Event Witnessed XX | TE-01 epilogue | Cannot trigger on neutral close |
Event Witnessed I–XIX are ending-agnostic but several require flags shared with True Ending routing—100% is not a loose collection of side scenes; it intertwines with Gadola's conspiracy arc.
Frequently Asked Questions
Why are achievements named Event Witnessed instead of story titles?
PantyParrot used numbered event trophies in MICOCO to avoid spoiler-heavy Steam store text. HILLS continues that pattern with twenty events instead of ten.
Do failed events still unlock achievements?
You must view the full scene. Some events have success/fail variants; only the primary gallery scene awards the trophy.
Is there a debug or cheat achievement?
No. All 25 are earned through normal gameplay systems.
How long to unlock all 25?
Blind first run earns roughly half. Dedicated completion routing takes 18–32 hours total across two or three playthroughs per our 100% guide.
Are hidden achievements included?
Steam lists all 25 publicly. None are secret or undocumented in the base game client. Gallery replay does not retroactively award Steam trophies for scenes already viewed in theater mode.