Updated June 2026

Post-Story Cleanup Walkthrough — Moldwasher

This Moldwasher walkthrough page covers post-story achievement hunting and 100% completion routing. After main missions end, Gamer Brain and remaining achievements require systematic backtracking. Use the steps below alongside our Tools section when a mission requires equipment you have not yet unlocked.

Post-Story Priorities

Main story completion opens full mission select for replay. Shift priorities to: missed hidden drops (check every mission results memory), sticker backtracking, toy and cassette collection, gachapon decoration pulls, and achievement-specific challenges like Sushi Set and HighGrow.

Use the Achievements page sorted by global completion percentage—tackle high-percentage achievements first for quick wins, then grind rare ones like Gamer Brain last.

100% Completion Checklist

  • Replay missions with incomplete hidden drop counters
  • Collect all stickers—Stickers guide
  • Find all toys and cassettes—Toys and CDs guide
  • Pull 25 gachapon decorations for gambling achievement
  • Fully upgrade every tool for For Science achievement
  • Verify Gamer Brain by cross-checking all categories

The All Collectibles guide with video reference provides the fastest visual backtracking route.

Related in Walkthrough

Frequently Asked Questions

Can I still access all missions post-story?

Yes. Mission select allows replaying any completed level for collectibles and achievements.

What is the last achievement to go for?

Gamer Brain requires every collectible category complete—save it for final verification.

Do I need to replay the entire game?

No. Target only missions with missed drops and specific achievement requirements.