OPUS: Prism Peak launched on April 15, 2026, and its 40 achievements are anything but padding. Developed by SIGONO INC. and published by SHUEISHA GAMES, this narrative adventure puts you in the role of a weary photographer traveling through the Dusklands alongside a girl who has lost her memories. The achievement list reflects that premise directly: photography, exploration, and thorough engagement with the world's lore systems are the pillars everything else rests on. Some achievements unlock without any effort. Others will end a run if you slip up once.
Story progression achievements
Six achievements unlock automatically as you complete each chapter. You cannot miss these on a full playthrough.
Two ending achievements sit on top of these. Home is tied to the Prism Ending, while Farewell Itself requires reaching the Peak Ending. According to the Steam achievement data, the Peak Ending has 0 recorded completions so far among tracked players, which suggests it demands more thorough completion than the Prism Ending path.
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Play through the story naturally on your first run without stressing over conditions. Lock in the Prism Ending, then plan a second run targeting the Peak Ending alongside the stricter challenge achievements.
Photography achievements — how many photos do you actually need?
The photography progression runs across four tiers, each requiring more shots than the last.
- Amateur Photographer — 30 photos
- Apprentice Photographer — 100 photos
- Professional Photographer — 250 photos
- Master Photographer — 400 photos
Three additional photography achievements require targeting specific objects in the world rather than just hitting a number.
- OPUS: The Day We Found Earth — photograph an ad featuring a certain robot
- OPUS: Rocket of Whispers — photograph a specific poster inside a factory
- OPUS: Echo of Starsong — photograph a poster for a famous opera
These three are direct nods to the earlier games in the OPUS series. The most practical approach, confirmed across the source data, is to photograph everything you see during exploration rather than saving camera use for later. Getting to 400 total shots across a full playthrough is very achievable if you treat the camera as your default interaction tool.
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Do not save photography for a dedicated grind session. The specific poster and ad locations are spread across chapters, and backtracking to them later may not be possible depending on chapter structure.
Collection achievements — what do you need to find?
Six collection achievements cover the game's hidden items. Most require finding every instance of a given collectible type, and several carry a single-playthrough restriction.
- Glimpses — collect all Glimpses of the Barrens
- Wishes — collect all Wishes from the Dawnlands
- Memories — collect all Memories
- Passage — collect all Old Photos in a single playthrough
- Not Forgotten — collect all Blindspot Magazines
- Gearhead — collect all Camera Gear
The single-playthrough requirement on Passage is the one that catches most players. Missing a single Old Photo means that achievement resets and you need another clean run to complete it. Plan a dedicated collectible run where you move slowly and check every area before progressing.
Field Notes and research achievements — the hardest category
This is where completionists spend the most time. Six achievements are tied to the Field Notes system, and they are closely connected to each other.
- Language of Fire — decode all fire runes in the Field Notes in a single playthrough
- The Old Stories — complete all mural research in the Field Notes in a single playthrough
- Full View — restore all Star Photography Notes in a single playthrough
- Research Notes — restore all Field Notes Pages in a single playthrough
- Spirits of the Dusklands — see everything through the Field Notes in a single playthrough
- Really See Them — fully see every Spirit in the Field Notes in a single playthrough
Every single one of these requires single-playthrough completion. Because they overlap heavily in terms of what actions trigger them, the most efficient approach is to run all six together in one dedicated playthrough. Treating them as separate goals across separate runs wastes time.
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The Field Notes achievements are interconnected. Decoding runes, restoring pages, and fully observing spirits all feed into the same system. Work through them simultaneously rather than treating each as an isolated task.
Challenge and condition achievements — what conflicts with what?
Several achievements impose strict conditions on how you play, and some directly contradict each other.
- Who Needs Cleaning — never clean the lens in a single playthrough
- Untouchable — never get rescued from the Nightwaters or Sacred Lake in a single playthrough
- EV+6 — stay positive throughout the opening monologue
- EV-6 — stay negative throughout the opening monologue
- I Know the Nightwaters — get rescued by every spirit in the Nightwaters in a single playthrough
- I Know the Sacred Lake — get rescued by every spirit in the Sacred Lake in a single playthrough
EV+6 and EV-6 cannot coexist in the same run since one requires positive choices and the other requires negative ones throughout the opening monologue. Untouchable and both I Know achievements are similarly incompatible, since one requires avoiding rescues entirely and the others require seeking out every available rescue.
Plan at least two separate condition runs to cover both sides of these conflicts.
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The EV achievements only require specific choices during the opening monologue, so they are quick to target on a replay without committing to a full new run.Exploration and interaction achievements
A handful of achievements reward thorough world interaction beyond the main collectible categories.
- OPUS4 — talk to every spirit at the Nameless City gathering in a single playthrough
- The Stars — sit at the Great Flow
- Full Circle — inspect all Seer's Statues at the Sacred Lake in a single playthrough
- I Remember (hidden) — correctly recall the spirits' names in the Nameless City
- Forgetting Someone? (hidden) — try to walk off without Ren at Nevergone Peak
- Not Ready (hidden) — let Ren press the shutter at Nevergone Peak
- Just Look Away (hidden) — let all the spirit statues fall in Fadelight Tunnel in a single playthrough
The hidden achievements in this group are worth noting. Forgetting Someone? and Not Ready both trigger at Nevergone Peak but require opposite choices, so you need separate runs for each. Just Look Away requires deliberately allowing all spirit statues to fall in Fadelight Tunnel, which runs against the instinct to preserve everything.
How many playthroughs does 100% completion require?
One run is not enough. Based on the achievement structure documented across sources, a realistic completion plan looks like this:
Run 1: Story, photography milestones, general collectibles, EV+6, OPUS4, general exploration achievements. Aim for the Prism Ending.
Run 2: Peak Ending, Field Notes full completion, Passage (all Old Photos), Full Circle, Research Notes, Spirits of the Dusklands, Really See Them.
Run 3: Condition conflicts. Cover EV-6, Untouchable, Who Needs Cleaning, and the hidden Nevergone Peak choices that conflict with earlier runs.
Run 4 (optional): I Know the Nightwaters and I Know the Sacred Lake if not covered alongside other objectives.
The single-playthrough requirements are the main reason runs stack up. Planning which conditions you target in each run before you start saves significant backtracking.
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