DustFall Cataclysm Mode — The Post-Ending Mode on Steam

DustFall Cataclysm Mode is named in exactly one official place: the feature list on the Steam store page. That bullet reads, in sequence, six layers and six core bosses, three endings, plus Cataclysm Mode after the ending. Nothing else about the mode is published, so this page covers what that single line does and does not establish, and marks everything else as not documented yet.

The game itself is a single-player descent roguelite shooter from LeoGame, released on October 1, 2026 at $1.79 in the US on Windows. Cataclysm Mode belongs to that same base package, which is the most concrete fact available about it.

What Cataclysm Mode Is

The store page groups Cataclysm Mode with the ending rather than with the campaign content, and the wording is the whole of the evidence. Because it is listed after the ending and beside the three-endings bullet, it reads as post-campaign content that becomes available once the story is finished, rather than as a difficulty setting you pick at the start.

Because DustFall is built from descents, a reasonable expectation is that the mode reuses the descent loop in a harder or altered form, but the store page does not say that. Treat the loop reading as an inference, not a documented fact.

Question	Documented answer
Where the mode is named	The Steam store feature list, in the endings bullet
When it becomes available	After the ending
What it changes	Not documented yet
Unlock requirements	Not documented yet
Separate purchase or DLC	No; it is listed as a feature of the base game
Its own achievements	Not documented yet

How It Unlocks

The only unlock condition on record is finishing the game. The store page states that Cataclysm Mode comes after the ending, and it separately states that there are three endings, so the number of endings is documented even though the unlock rule is not.

Whether any of the three endings opens the mode, whether one specific ending is required, and whether the unlock is tied to a save file or to a completed run are all unstated. Because the store page describes progress in terms of descents and layer cores rather than a chapter list, there is likewise nothing official about a post-campaign chapter order.

If you want the campaign route that leads into it, the walkthrough page lays out the documented order from the first descent to the sixth ruin, and the ruins page covers how the six layers are structured.

What Is Not Documented

Cataclysm Mode is the thinnest page in the official material, and listing the gaps is more honest than filling them.

• What the mode changes about enemies, terrain or pacing.
• Whether the surface scan behaves differently in the mode.
• Whether rewards, unlocks or achievements are exclusive to it.
• Whether it is endless, structured, or a single remixed campaign.
• Any release date, patch note or future plan for the mode.

None of those points appears on the store page, in the store API data or anywhere in the official listing used here, so they are all not documented yet. The safest summary is that Cataclysm Mode exists, it sits after the ending, and it ships with the base game at no extra cost.