100% Completion Checklist
Use this page as a progress tracker for MIO: Memories in Orbit. Nothing in the main collectible set is permanently missable (except the special Harry ending). Typical 100% time is roughly 20–25 hours.
For pin-point locations, use our full interactive map hub (Gamer Guides ~1,402 markers). For every modifier name and effect, see the full Modifiers list.
Collectibles Totals
| Category | Count | Related trophy / note |
|---|---|---|
| Modifiers | 42 | Fully Modded |
| Coating Components | 24 | Fully Shielded |
| Candles | 12 | Tribute (deliver to Asma) |
| Old Cores | 39 | The Collector |
| Curios | 7 | Now We Know (deliver to Capucine) |
| Mod Extensions | 7 | Helps Modifier Overload (100+ slots) |
| Fragmented Serial Numbers | 6 | Unlocks Manufactory / The Pit path |
| Mel's Minions (SIN, COS, TAN) | 3 | The Pie |
Story & Completion Milestones
- Unlock map via Shii (Severed Spine donations)
- Rescue Mel (Dr Halyn’s Collector) — unlocks Gratitude shop item
- Buy everything from Mel — Out Of Stock (needs all 3 Minions)
- Complete The Crucible → Flowing Steps
- Reach Celestial Bay — Déjà Vu
- Standard Ending
- True Ending (Welcome Home) — defeat Shii
- Optional: Harry ending (missable — ignore Shii entire run)
- Open at least 100 modifier slots — Modifier Overload
- Defeat all 19 bosses
Tip: print this page or keep a notes app tally. Deep links: Crucible · Endings · Trophies · Assists
Suggested Cleanup Order
- Finish both main endings (or True Ending first if you prefer).
- Rescue Mel's Minions and empty Mel's shop.
- Hunt Mod Extensions early so late builds are flexible.
- Clear remaining Coating Components, Old Cores, Candles, Curios.
- Finish the 42 Modifiers (shop + exploration + Perfect State from Xelato).
- Manufactory / The Pit (6 Serial Numbers + Defective Core from Candles).
- Optional bosses and remaining trophies.