Sephiria Achievements Guide: Track the Official Steam List Without Guessing

Start with the official list, not a copied checklist

Steam's global Sephiria achievement page currently lists 27 achievements. That page is the source of truth for the count, each public title, its public requirement text, and the global completion percentage. A fan checklist can be useful for taking personal notes, but it should not overwrite Steam's own wording or make a hidden entry look solved when Steam has not revealed its condition.

The list includes several visible early objectives, boss defeats, chapter markers, and Hard Mode milestones. It also includes entries with blank public requirement text. Treat the official list as a live reference: if Steam adds, removes, or changes an entry, the official page overrides any number or title on this guide.

Use public requirements as milestones, not a forced route

Steam publicly identifies DIY as repairing the house, Traveler as finding a hidden room, and several boss achievements by the boss to defeat. It also identifies Root's Retreat, Root's Retreat 15, and Root's Retreat 30 as clears of the corresponding Hard Mode stages. Those are real goals, but they do not justify an invented fastest route, a claimed build requirement, or a claim that every player must complete them in the same order.

The practical way to use those labels is to keep the current run focused. A player learning the tower can treat visible chapter and boss achievements as progress markers. A player ready to challenge Hard Mode can treat the three public stages as separate objectives. If the game gives you a new notification, verify it on your own Steam page rather than relying only on a browser tab or a remembered screenshot.

A three-part official-achievement tracker

Make a short note outside the game, then update it only when the official achievement page or your Steam notification confirms a result. This keeps a completion plan useful without turning it into a guesswork guide.

A visible goal can tell you what the milestone is, but the player should still learn the combat, board, and mode normally. A hidden goal cannot be safely reverse-engineered from its title alone.

• 1. Separate the visible list into early exploration, named boss or chapter progress, and Hard Mode milestones.
• 2. Check each completed milestone in Steam before marking it done, especially after finishing a chapter or a Hard Mode stage.
• 3. Leave a hidden entry unresolved until Steam reveals it or a current official source gives its condition; this guide does not publish a guessed condition for a hidden achievement.

Keep Hard Mode achievements separate from a normal clear

The official list makes Hard Mode Stage 1, Stage 15, and Stage 30 distinct milestones. Do not treat a normal progression clear as proof that the next Hard Mode achievement will happen automatically. Hard Mode adds its own conditions and changes which part of a run is being tested, so use the dedicated Hard Mode guide to decide what one condition you are learning before setting a milestone as the run's goal.

This separation also protects the rest of the collection plan. If you are learning a weapon or trying to understand an Artifact board, it can be better to make that the question for a normal run rather than mixing it with a new Hard Mode threshold. A record that says which mode, stage, and result you tested gives you a far better next attempt than a vague note saying only that an achievement did not unlock.

What to do when a listed achievement stays locked

First read the exact public wording on Steam again and compare it with the result you actually completed. A title can sound broader or narrower than the condition behind it, and chapter or boss names are not permission to infer an undocumented extra step. Capture the achievement name, the mode, the chapter or stage, and the result you saw before assuming there is a game problem.

If the requirement is visible and you are confident it was met, check the current official Steam News feed for fixes before looking for a workaround. If the entry is hidden or has no public requirement, leave it unlabelled. Waiting for an official reveal is more useful to a real completionist than publishing a confident but false trigger condition.

• Use the official Steam list for current names and public conditions.
• Keep normal-run, chapter, boss, and Hard Mode notes separate.
• Do not convert an unrevealed achievement into a rumour-driven checklist item.