SpaceChem achievements
20 achievements on Steam
Rarest first. Published rarity by platform.
Each platform measures its own player population.Why that matters
Each platform calculates rarity from its own player population. These percentages are shown side by side but are not a controlled comparison. Percentages are shown exactly as each platform publishes them — Pyroblast does not recalculate them or mix player populations together.
Interstellar Transportation SpecialistSteam onlyBeat the assignment "Collapsar" in the 63 Corvi campaign.
Steam5.7%
Distinguished Publication ReviewerSteam onlyBeat 20 published ResearchNet assignments.
Steam5.9%
Chief Executive OfficerSteam onlyBeat the game!
Steam6.1%
Junior Publication ReviewerSteam onlyBeat 10 published ResearchNet assignments.
Steam6.2%- Senior Efficiency SpecialistSteam only
Beat the assignment "Molecular Foundry" using two or fewer reactors.
Steam6.4% - Senior Performance SpecialistSteam only
Beat the assignment "Σ-Ethylene" in under 6000 cycles.
Steam6.5% 
Cost Control SpecialistSteam onlyBeat the assignment "Falling" using two or fewer reactors.
Steam6.9%- Materials Engineer of the PeopleSteam only
Beat the assignment "Challenge: KOHCTPYKTOP".
Steam7.2% 
Performance SpecialistSteam onlyBeat the assignment "No Thanks Necessary" in under 2200 cycles.
Steam7.8%- Performance Specialist IISteam only
Beat the assignment "Gas Works Park" in under 2700 cycles.
Steam8.0% 
Science is an Indoor ActivitySteam onlyBeat 3 published ResearchNet assignments.
Steam8.1%- Industrial PhysicistSteam only
Beat the assignment "Challenge: Applied Fusion".
Steam8.3% - Efficiency SpecialistSteam only
Beat the assignment "No Ordinary Headache" using only one reactor.
Steam8.8% - Environmental EngineerSteam only
Beat the assignment "Challenge: Going Green".
Steam9.9% 
Junior Performance SpecialistSteam onlyBeat the assignment "Nothing Works" in under 1000 cycles.
Steam11%
Director of Moustache ResearchSteam onlyBeat the assignment "Moustachium 608".
Steam12%- Moustache ScientistSteam only
Beat the assignment "Moustachium 604".
Steam15% - Junior Permutation TechnicianSteam only
Beat the assignment "Challenge: In-Place Swap".
Steam16% - Moustache Research AssistantSteam only
Beat the assignment "Moustachium 602".
Steam17% 
Polar ExpeditionSteam onlyReach the south pole of Sernimir IV.
Steam36%
Played SpaceChem? See how many of these you've got.
- Which ones you've earned — and which you're missing
- Your rarest unlock, and where it ranks
- Your whole history for this game, on one timeline
- Steam, PlayStation, Xbox and Battle.net in one place
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How rarity is calculated
Each platform calculates rarity from its own player population. These percentages are shown side by side but are not a controlled comparison.
- Steam — Valve's published global unlock percentage across Steam owners of the game.
Percentages are shown exactly as each platform publishes them. Pyroblast does not recalculate them and does not mix player populations together. Data updated .