Arc 3: Heaven's Chains

• ▸Arc 3 is named Heaven's Chains and continues the scenario after Every Moment — the fourth hidden arc achievement on the Steam list, after The First Lie, A Past Best Untold and Every Moment.
• ▸Eight songs form the Arc 3 track group as of v1.0.2c, per the community wiki — and three of them, Chaoticism Legacy, Re:Flection and Vesper, sit in the game-wide fourteen-chart FBD 13 tier.
• ▸Songs unlock through the scenario itself: Falling Shadow is the act's first new track, and roughly 50 of the official 70-song roster sit in the pool by the time the chapter ends.
• ▸This page is spoiler-bounded by design: it walks the chapter's structure and stops where the act stops — Keys under arrest, Act 3 complete. No endings, nothing past Arc 3.

Frames in this guide come from TrappyTheDemon's Part 6 playthrough — 3.6 hours of Act 3 in a facecam-free, full-screen capture, the clearest long-form Heaven's Chains footage we've verified. Every frame links back to the exact moment it was taken.

The source video is VFR (variable frame rate), so the deep-link seconds on every frame mark the verified extraction points rather than a to-the-second timeline. Story dialogue scenes stay out of the frames; what remains is UI.

Act 3 opens late at night, with a monologue: investigating the Savior has drawn threats. From there the chapter moves in three movements. The Sunrise segment picks up in a morning park, where Freya shares a location app over Connect. The middle of the act shuttles the cast through Nia's rescue, a gathering in the library, an eavesdropping plan at the Academy Exchange — a bug planted in Room 504 — an Iris crisis fought out in a mindscape to Chaoticism Legacy, and Nia proving herself live from a rooftop. The late act runs Keys through two dive battles and into the final boss encounter of Heaven's Chains. When it ends, Keys is under arrest, and Act 3 is complete.

That paragraph is the entire spoilable surface of this page: events are named at summary level only — no dialogue, no scene detail, and nothing from the act's closing moments onward.→ Arc 2 Guide

There is no puzzle to Arc 3 access — it opens as the scenario continues past Every Moment. What the chapter looks like in motion, step by step, each frame credited to its moment in the source run:

1. 1

   Follow the SCENARIO flow

   Act 3 hangs off its own node map in the SCENARIO screen — the chapter's beats sit on a path you clear in order. The source run returns to this board constantly: every beat, from the opening monologue to the Sunrise morning in the park, is a node on it.

   

2. 2

   Let the story unlock the songs

   New tracks arrive through progression, not a shop: Falling Shadow is the first song Act 3 grants, playable the moment its node clears. By the end of the chapter roughly 50 of the official 70-song roster sit in your pool — each new arrival brings its four charts and a fresh record to set.

   

   

3. 3

   Run the case over Connect

   Connect is Act 3's phone: the location app Freya sends in the Sunrise segment and the coordination that follows land as chat messages you read between nodes. The message list doubles as a record of the chapter's moving parts.

   

4. 4

   Fight the mindscape crisis

   Mid-act, Iris's crisis becomes a mindscape encounter, and the arc's boss songs surface here — Chaoticism Legacy is the mindscape's boss track, with Self-confrontatioN fought around it. Expect this all act long: Arc 3's boss songs run on the standard chart presentation, no 3D boss events.

   

5. 5

   Clear the dives, collect the cards

   The late act puts Keys through two dive battles, yggthrasir among them. Each clear pops a reward screen — new card art for the Remembrance collection — and the next fight always starts the same way: from the CONNECT menu, deck picked, encounter launched.

   

   

   

6. 6

   Face the final boss, close the act

   Past the dives waits the final boss encounter of Heaven's Chains. When it ends, Keys is under arrest and Act 3 is complete — and this walkthrough stops there, exactly on the page's spoiler line.

   

The community wiki's song list assigns eight tracks to Arc 3: Heaven's Chains, all documented as of v1.0.2c. Chart levels are MIN / EVO / ULT / FBD:

Chart levels from the community wiki song list, verified 2026-09-17. The full 70-song catalog lives on the song list page.→ In Falsus Song List — All 70 Tracks with Chart Levels

This page stops where Act 3 stops: the final boss encounter ends, Keys is arrested, the act closes — and nothing after that appears here. No endings, no epilogue, no later arcs, no post-credit extras. Per the community wiki's note on the official streaming guidelines, content past the end of Arc 3 stays undocumented entirely. When that line moves, this page will link to whatever covers it — it won't become the spoiler page itself.

Pages this guide leans on, and pages that lean on it: