What to do
- Find Julien and defeat SendaThe Method Indie route says to find Julien in Tresna during the day first; he gives the Senda objective. Reach Aeolia, enter Zephyr Fields, and defeat Senda for the requested material.
- Get the recipe, then use Andrei's forgeReturn to Julien after Senda to complete the task and receive the Aetherium Heart recipe. Have Andrei's forge craft the Large Sword. AllThingsHow reports The King's Left Mask plus 2,000 gold; Method Indie confirms the quest → recipe → forge sequence but does not state the cost, so check your current forge panel.
- Enter Treasury Halls in The GalleryEquip Aetherium Heart, start a Treasury Halls run, and go to Masa's glass capsule at the area's opening / first stage. The older EA answer calls this Technology Area 2; current guides use Treasury Halls, so use the named area and cell landmark.
- Break the glassStrike the capsule with Aetherium Heart. The current guides agree that regular weapons do not work; use this weapon for Masa's glass cell.
- Close Thief Trophy in townFinish or end the run, return to Tresna, and speak to Masa near the south staircase by Julien. Task completion and the Combat Rod recipe are the success feedback reported by the current guides.
How you know it worked
The glass cell shatters, Masa is out, and after you return home the Thief Trophy/task completes when you speak with him near the south staircase by Julien. Current guides identify the Combat Rod recipe as the reward; do not use an ordinary weapon or a save-menu action as the success check.
Platform and version boundaries
| Required | Aetherium Heart Large Sword; current 1.0 guides agree that regular weapons do not break Masa's cell. |
|---|---|
| Prerequisite | Current guides place the recipe after reaching Aeolia and defeating Senda in Zephyr Fields, then returning to Julien. The older 500g south-portal note is not treated as a current gate. |
| Location | The Gallery → Treasury Halls, at the start / first stage. The older Steam answer calls it Technology Area 2; no fixed procedural floor or coordinate is asserted. |
| Recipe cost | AllThingsHow reports The King's Left Mask + 2,000 gold; Method Indie confirms the route but omits a price. Verify the current forge panel and do not copy an EA-era cost blindly. |
| Version | The route is corroborated by post-1.0 text guides checked 2026-09-14; the official 2026-09-10 Hotfix 1 has no listed Masa/glass/Thief Trophy change. No first-party walkthrough or in-game capture was found. |
Common failure branches
- Stop and verify: Whether The King's Left Mask and 2,000-gold detail is unchanged on every current platform/build; the live forge panel wins if it differs.
- Stop and verify: The exact procedural floor/room dressing and controller interaction wording inside Treasury Halls.
- Stop and verify: Whether the older 500g south portal is still a required gate after 1.0; current guides do not re-confirm it.
- Stop and verify: A first-party walkthrough or current in-game capture for the route; the text evidence is sufficient for the bounded answer but not for platform-specific UI claims.
FAQ
What weapon frees Masa / breaks the glass?
The current post-1.0 guides point to the Aetherium Heart Large Sword. Normal weapons do not break the glass cell.
How do I reach Julien for the weapon?
Speak with Julien in Tresna to start the Senda task, defeat Senda in Zephyr Fields, then return to Julien for the Aetherium Heart recipe and use Andrei's forge to craft it. One guide reports The King's Left Mask + 2,000 gold; the other confirms the route but omits a cost, so check the current forge panel. The older EA answer's 500g south portal is not a universal 1.0 instruction.
Where is Masa's glass cell?
Start a run in The Gallery's Treasury Halls and check the opening / first stage. Older EA wording calls the location Technology Area 2; use the Treasury Halls cell landmark rather than a guessed fixed coordinate.
How do I break the glass in Moonlighter 2?
Equip Aetherium Heart, enter Treasury Halls, and strike Masa's glass cell. Normal weapons do not break it.
Is this confirmed for 1.0?
Two post-launch guides agree on this route. The recipe cost and controller prompt can vary; use the current forge and on-screen prompt.
Sources · checked 2026-09-14
Source type is explicit so a player can tell an official rule from a community observation.
- AllThingsHow: Free Masa / Thief Trophy (updated 2026-09-08) ↗editorial · Post-1.0 text guide · Post-1.0 text guide independently gives the Senda/Aeolia gate, King's Left Mask + 2,000-gold recipe report, Treasury Halls glass-cell action, return-to-Masa step, and Combat Rod reward.
- Method Indie: Free Masa and Combat Rod (updated 2026-09-09) ↗editorial · Post-1.0 text guide · Independent post-1.0 guide specifies finding Julien during the day for the Senda task, returning for the recipe, and using Andrei's forge; it also confirms Treasury Halls in The Gallery, regular-weapons failure, glass break, and the south-Tresna Masa reward conversation.
- Steam discussion: freeing the trapped NPC ↗player · EA-era source · EA-era player answer names Aetherium Heart, Julien, the 500g south portal, and the glass-prison route; the portal fee is retained only as an explicitly historical lead.
- Video guide and description ↗video · EA-era source · Independent EA-era visual route reference names the weapon, ordinary-weapon failure, glass prison, and Masa / Combat Rod reward wording; it is not presented as a 1.0 capture.
- Official 1.0 version - Hotfix 1 ↗official · 1.0 post-launch · Digital Sun's 2026-09-10 patch note covers stability, quests, enemies, and weapons/perks; no Masa, glass-cell, or Thief Trophy route change is listed. Version-context check only.
- Moonlighter 2 official Steam page ↗official · Current reference · Official game and platform context; it does not provide this puzzle's step-by-step answer.