Project Solaris 85 Steam Achievements (Spoiler-Light)

Project Solaris ships with 85 Steam achievements on the full PC release (Steam app context alongside the demo at app 3400280). This guide stays spoiler-light: it groups badges by likely system categories, explains how to plan multi-run completion, and tells you what not to chase on a first clear. It does not invent fake achievement titles. When a verified Steam display-name dump is unavailable, treat the names below as category labels, not claimed API strings. Pair this page with Getting Started, Endings, Trial Bosses, Daily Cards, Trust and Bond, and Shopkeeping.

First rule: survive the calendar before hunting badges

The game’s spine is a 100-day run with Day 10 elites, Trial Ceremonies about every 20 days, and a Day 100 finale. A dead save collects nothing. Clear at least one honest run using Getting Started and Trial Bosses before you open a spreadsheet. Wishlist energy (the title crossed 20k+ wishlists before launch) does not replace yellow QTE reps.

Achievement categories (spoiler-light)

Think in buckets. Steam will show exact titles in your client; this wiki describes what kind of play fills each bucket.

1) Story and route milestones

Expect badges tied to finishing the campaign, reaching late calendar gates, and seeing multiple endings shaped by choices, milestones, and side stories. Hunting every route in one save is usually a trap — plan dedicated follow-up runs with different Social / Development focuses (Endings, Supporting Cast).

Spoiler posture: do not look up exact ending names until you want them. Use cast focus and card discipline instead of a flag checklist on run one.

2) Combat mastery

Likely includes consistent QTE performance (yellow success streaks, careful red critical use, recovering from black / miss), elite clears, and Trial Ceremony victories. Mastery badges reward the same habits taught on Combat QTE: yellow first, red when Trust and telegraphs allow, never greed openers on ceremony day.

Demo Ver.0.6 expanded buff/debuff space and Hom skill behavior; full-game mastery badges may lean on that wider toolkit. Practice in low-stakes Battle days, not only on gates.

3) Trust and bond

Reliability with Hom is both a QTE enabler and a relationship flag. Expect achievements for raising Trust thresholds, attending partnership-facing scenes, and proving hard skills after bond investment (Trust and Bond). These often overlap Social / 交流 cards on Daily Cards.

4) Shopkeeping and craft

Economy badges typically cover shop minigame sessions (店番), spending breakpoints on Solaris gear, and Hom bulk crafts that match skill flavor (Shopkeeping). Schedule shop blocks in the first half of ~20-day intervals so crafts exist before Trials — badge hunting that banks gold the morning of Day 100 still fails the fight.

5) Daily-card and exploration milestones

Some of the 85 will almost certainly reward exploring the full action menu: Battle, Rest, Learn skill, Shopkeeping, Social, and Development across a run or across saves. Hitting card variety milestones is easier when you already rotate resources instead of Battle-only autopilot (Daily Cards, 100-Day Strategy).

Crowdfunding stretch goals mentioned part voice, hard modes, endless, and extra scenarios — if post-launch modes add badges, treat them as a later completion layer after base 100-day mastery.

Multi-run completion plan

Run A — mechanical clear

Goal: Day 100 Trial survival, basic Trust floor, functional shopcraft. Ignore rare route edges. Use Beginner Builds if you need a safe archetype.

Run B — story breadth

Goal: different Social / Development focus, alternate cast threads, second ending exposure. Keep ceremony checklists from Trial Bosses so story ambition does not wipe the save.

Run C — system completion

Goal: remaining combat mastery, shopcraft experiments, and card-milestone gaps. Demo lessons (skill enhancement, wider buff/debuff vocabulary, UI/tutorial improvements; later demo notes on save slots, skill growth tree, scenario viewer) hint that replaying with better tooling is intended.

Optional Run D+ — mode and scenario extras

Only after base categories feel done. Hard or endless-style content from stretch-goal design is a poor first-badge target.

What not to do

• Derail Day 18 Shopkeeping needs to force a random Social for a badge you cannot verify yet.
• Invent or memorize fake achievement titles from guides that guessed API names.
• Spoil antagonist or ending titles while chasing “story” badges on a blind-leaning first play.
• Assume the Steam store’s launch-week pricing quirks (including the planned 10% launch discount anomaly that was not applied) change achievement logic — they do not.

Tracking without spoilers

1. After each ceremony, jot which systems you neglected (Trust, shop, Learn practice, Rest).
2. After each ending, jot which cast focuses you skipped.
3. Compare your notes to Steam’s locked list in the client — fill gaps on the next save.
4. Use the Day Planner so badge days still protect Trial weeks.

Price, platforms, and expectations

Full game targets roughly $9.99 on Steam as a single-player release from Greenhorn / IndieArk (Steam release Sep 20, 2026, with Japanese coverage also citing Sep 21). Achievements are a completion layer on top of that campaign, not a replacement for learning yellow gauges and daily card budgets.

Related reading

• Getting Started
• Endings
• Trial Bosses
• Daily Cards
• 100-Day Strategy
• Combat QTE
• Trust and Bond
• Shopkeeping
• Guides Hub

Clear the Trials. Rotate the cards. Raise Trust on purpose. Let Steam’s real display names confirm what you earned — this page only teaches how to plan the hunts without wrecking the story.