Sulfur Game Levels: Complete Biome Guide and Stage Flow

Sulfur game levels progress through nine major dungeon regions starting at The Caves and ending at Beyond the Veil, challenging players across procedurally generated stages with unique floor counts, altars, and boss encounters.

Progression in SULFUR takes your character from the crash site outside the entrance through increasingly lethal biomes. According to the Into Indie Games walkthrough, each level is procedurally assembled, ending at a gate with yellow light that pulls you into the next stage. Along the way, clearing breakable crates, barrels, and objects helps you stockpile ammunition, food, and ingredients for food recipes.

What Are the Main Dungeons and Floor Counts in Sulfur?

Dungeon regions in Sulfur are segmented into a set number of procedurally generated floors that must be completed sequentially before unlocking the next zone. While transitioning between levels, you can open your inventory screen at any moment to check your current floor number.

How Does Stage Progression Work in the Early Regions?

Early-game biomes establish the survival loop by testing your spatial navigation and ammo conservation.

The Caves serve as the opening dungeon across seven distinct levels. You navigate wooden scaffolding, mud caverns, and tunnels. Level 4 hosts the altar to charge your amulet, allowing a quick escape if your supplies dwindle. Level 5 triggers a mini-boss battle against a wooden-armored brute that splits into three smaller copies upon breaking. At Level 7, you encounter The Cousin, who hurls mud projectiles and summons waves of goblins from subterranean sludge pits.

The Town shifts the action into dilapidated streets and multi-story structures across five stages. Masked human enemies dominate the rooftops and alleys. Shooting off their masks sends them into panic or triggers friendly fire among their allies. Reaching the fifth level brings you past hostage cages into an open amphitheater, where three teleporting masked gunners armed with heavy weapons attack simultaneously from elevated perches.

The Sewers introduce four toxic stages filled with flooded corridors and sludge. While this region does not feature a dedicated final boss, the fourth level forces you through dense enemy ambushes while navigating contaminated waterways to locate the sewer pipe exit.

The Hedge Maze acts as an unnumbered transitional biome directly after the sewers. Large multi-eyed amalgamations roam the corridors. They only sustain damage when their eyes are destroyed, temporarily collapsing before getting back up unless finished off with explosive ordinance. Progress here requires tracking the silhouette of the castle in the skybox to reach the courtyard gates.

Which Loadout Strategy Fits Each Stage Transition?

Choosing the proper equipment route determines whether you preserve weapon durability or burn through your stockpile before an altar.

How Do You Clear Mid-to-Late Game Regions and Bosses?

Mid-game regions demand advanced mobility gear and burst damage to manage dense enemy mobs.

Castle Dungeon features four vertical levels heavily reliant on wooden platforms and elevated walkways. Equipping jump-boosting accessories like Sulf Air shoes prevents falling into ambushes. Level 4 culminates in an executioner mini-boss protected by a metal head cone. Cracking this cone exposes a glowing orb that detonates upon defeat.

The Castle spans four interior levels guarded by laser snipers and sappers laying proximity mines. Level 4 takes place inside the grand throne room against Saint Lucia. She anchors herself in the center of the hall, casting web threads, summoning assassins, and darkening the room to launch fiery projectiles that must be shot down.

The Forest transitions outdoors across five levels traversed via winding dirt roads. Sentinel birds guard the path, raising armored wings to deflect incoming bullets before lunging. Level 5 hosts Terrorbaum, a monstrous tree entity that burrows beneath the soil, summons flying crows, and uproots to charge directly across the arena during its final phase.

Shav'Wani Fortress follows a bridge sequence into a six-level complex featuring bathhouses, staircases, and subterranean tunnels. Level 6 triggers the fight against His Most Holy Emperor. Phase one requires blasting mechanical tail segments off a segmented wyrm, while phase two forces a circular retreat from a skittering mechanical spider firing guided rockets.

The Desert features five open, dune-covered stages populated by Hellshrew drillers and camouflaged snipers. Locked crypt doors requiring a crypt key appear along the path, offering optional combat challenges. Level 5 pits you against Desert Santa inside a moving sand dome, dodging orbital rocket barrages and counter-sniping from distant ruins before a final duel.

Beyond The Veil is the point of no return reached past the desert perimeter. Your amulet ceases to function, preventing any teleportation back to safety. Entering the ruined church triggers the encounter with the Wise Old Woman, who reveals her true form as the Witch. Defeating her rotating phases of clones, sulfur lasers, and spawned horrors concludes the main campaign and unlocks endless mode for looping progression runs.

Where does this guide's official Sulfur game information come from?

Official details in this guide follow Sulfur game on Steam, which describes the game in its own words.

SULFUR is a modern old-school action-adventure: Outsmart enemies, find treasure, improve weapons, harness powers. Delve deeper, find answers, make it end.

Sulfur game on Steam