One game, one fire, and a surprising number of ways to defend it. The mode names below come from official patch notes and the store listing; where a mode's details are thin on the ground officially, that is said rather than papered over.
Adventure Mode: five regions
The campaign: a roguelite run structure through five regions, each ending in a boss. That is the mode the gameplay loop page walks through, the one the free demo previews, and the spine everything else hangs from. Clearing all five on Heroic with maximum shards and no event character is the community's mountaintop (the official 1.0 achievement for it is named Emberwarder).
Difficulty: Casual, Normal and Heroic
Three base difficulties, named in official achievement requirements (Casual, Normal, Heroic), picked from a card row alongside the extra structures:
What changes per tier is not documented in detail officially; community experience says Casual is a genuine tourist mode and Heroic is where build discipline starts. The old Slay-the-Spire Ascension comparison the developer made in 2024 maps onto the layer that sits on top:
Infernal Shards: the post-game ladder
Shards stack on top of Heroic as numbered levels, with 24 as the number the hardest achievements and community clears cite (a 2026 shard adjustment in the 1.0 notes, reworking Fragility and Nightmares shards at specific levels, confirms the ladder's shape). This is the mode the subreddit's elite threads are about: same game, escalating rules, community leaderboard chasing.
Endless, Challenge, Enigma Sanctum and the rest
| Mode | What it is | Source |
|---|---|---|
| Endless | Wave survival on event maps (Snowridge Outpost, Wyrmfell Bridge are named in 1.0 achievements); leaderboards included | Official achievements; mode details community |
| Challenge | Post-campaign mode; 1.0 capped monster speed growth at 30 percent and raised HP growth to 30 percent per wave | Official patch note |
| Enigma Sanctum | Score trials; the "It's Over 9000!" achievement demands a 9,000-plus trial score | Official achievement |
| Chaos Realm | A clear target for the Void Flame achievement (Heroic clear with Void Flame) | Official achievement |
| Daily / weekly / random challenges | Rotating runs; a "Winter Challenge" appears in community threads | Community + official hints |
| Event maps | Seasonal endless maps (Halloween and winter events are referenced in official materials); unlock menu backgrounds at wave 20 | Official + community |
| Custom games | Player-configured runs | Community report |
A note on what is not in the table: multiplayer. The developer's FAQ answer to "Multiplayer?" in February 2024 was "No. At this point it's probably faster to make another game from scratch", followed by a grin. Nothing since has moved that answer, and the post-1.0 plan (see roadmap) does not include it. Every "is Emberward co-op" search lands on the same flat no.
FAQ
Is Emberward co-op or multiplayer?
No. It is a strictly single-player game; the developer ruled out multiplayer in 2024 and has never revisited it. There is no local or online co-op of any kind.
What difficulty should I start on?
Casual if you want to sightsee, Normal for the intended campaign. Heroic and the Infernal Shard ladder are post-campaign projects; the community treats 16-plus shard levels as expert territory.
How do I unlock Endless and the challenge modes?
Endless and the post-game structures unlock through campaign progress; Special Event Characters and Infernal Shards specifically require finishing the entire game including Void Depths (1.0 rule). Community threads during Early Access saw temporary unlock-state bugs after big patches; current-state questions belong to the official troubleshooting thread.
What are Infernal Shards?
Stackable difficulty modifiers on top of Heroic, numbered up to 24. Two shards got 1.0 rebalances (Fragility level 3, Nightmares level 2), which is the official documentation of the system's depth.