Unofficial · Steam-sourced · Gaps labeled Unofficial fan site
MYCELIAL CODEX Shroom and Gloom Guide
Official Steam screenshot 2 from Shroom and Gloom

MYCELIAL CODEX

Shroom and Gloom bosses briefing

Players search for all bosses, boss order, and boss guides. Steam confirms fungal foes, dungeon combat, and a run goal of fighting into the heart of The Gloom — but does not publish a verified boss name list here. This hub answers that intent honestly.

Last reviewed: 2026-09-11 Evidence level: Evidence-limited Unofficial fan site Early Access · 2026-09-10

Media rights: Steam store art · APPROVED

Verified from official sources

  • Store copy describes mobs of monstrous mushrooms and combat through hand-drawn dungeons of fungal foes.
  • Runs aim toward the heart of The Gloom (capitalization as on Steam).
  • Combat uses the combat deck; exploration uses the explore deck — both are official dual-deck pillars.
  • Steam achievement titles include Gloom Slayer and Gunk Slayer (hidden). These are achievement names, not a verified indexed boss table.

Honest gaps (not published yet)

  • No official Steam boss name roster, HP values, phases, or recommended kill order is verified for this site.
  • Community wiki tables and video titles are not copied or treated as fact without official confirmation.
  • Per-encounter strategy write-ups wait for named, source-backed entities.

What you can verify before a boss list exists

  1. Read Steam feature copy for how combat decks interact with dungeon foes.
  2. Use the demo (appid 3602770) to learn encounter pacing without assuming a full-game roster.
  3. Track achievement names on the Achievements hub — titles only, not unlock steps.
  4. Check official Discord (Steam-listed) for patch announcements; do not treat rumor threads as verified.

How this hub relates to “boss order” searches

Roguelike runs may spawn encounters procedurally or gate content by deck progression — specifics are not catalogued here. Until Team Lazerbeam or Devolver publish an ordered boss guide, any “best boss order” list elsewhere should be treated as unverified.

Next tasks after this page

  • Builds — plan combat vs. explore deck priorities for hard fights.
  • Pathways — verified language about dungeons and The Gloom.
  • Achievements — 14 Steam achievements including slayer-themed hidden titles.

FAQ

What are all bosses in Shroom and Gloom?

A verified complete boss list is not available on Steam store materials reviewed here. This page documents that gap instead of inventing names.

Is there an official boss order?

Not published in the sources we trace on this site. Treat community order guides as unverified until sourced.

Are Gloom Slayer and Gunk Slayer boss names?

They are Steam achievement titles (both hidden). They are not treated as a confirmed boss encyclopedia on this site.

Sources on this page

Every claim above traces to these links. If a detail is missing, we say so — we do not invent it.

Overview Evidence-backed overview of Shroom and Gloom on Steam: double-deckbuilding, card growth, dungeons, achievements, and where our topic hubs start. Achievements Steam lists 14 achievements for Shroom and Gloom. See highlighted names, what 100% means today, and honest gaps until unlock conditions are verified. Builds Evidence-limited build briefing for Shroom and Gloom: double-deck roles, card growth, eating/soup loops — without fake DPS or tier tables. Pathways Location overview for hand-drawn dungeons and The Gloom — not an interactive map. Verified pathway language and explicit product gaps. Classes Shroom and Gloom has no verified MMO-style class list. This hub maps class searches to combat deck vs. explore deck roles and playstyle identity.