SULFUR his most holy emperor boss: how to beat him

To beat His Most Holy Emperor, aim only at the last mechanical ball of his worm-like body, shooting while he is airborne after each dive, until every ball falls off and the health bar empties. That is the core of Phase One, and it is the whole fight until the floor opens.

Getting to the fight ready

Shav'Wani Fortress is the region after the Forest and the Shav'Wani Bridge. According to the Into Indie Games walkthrough, the fortress spans five levels: you drop underground on level three through caverns filled with Shav'Wani enemies, resurface, then push toward the Shav'Wani castle on the final level. Before entering the boss arena, the walkthrough recommends a full stack of bullets, durable weapons, and at least one repair item, since the fight is long and your gear degrades as you shoot.

• Plenty of bullets — the fight covers two long phases
• Weapons with enough durability, plus at least one repair item
• Healing items or cooked food to refill before diving into the hole

Phase One: the mechanical worm

The emperor looks like a mechanical worm, and only the last ball of the body takes damage. He dives underground and leaps out elsewhere in the arena, generating a small shockwave with both actions — jump or move clear of it, then fire at him while he is in the air. Each mechanical ball that falls off covers the arena floor in sulfur: stepping on it clouds your vision and slows your movement, so keep to clean ground. As the balls come off, the emperor shrinks and gets slightly faster, so your aim timing matters more near the end. Once the bar is gone, a hole forms in the throne room floor — heal up and dive in.

Phase Two: the mechanical spider

Below, the emperor becomes a mechanical spider that crawls forward through a circular arena. Keep running backwards while shooting it, and watch your path so a wall or object does not trap you. Shav'Wani enemies keep spawning during this phase, and they can overwhelm you quickly — the walkthrough suggests clearing them out fast, with grenades cutting their numbers down. The spider shoots rockets; firing at the rockets disturbs their trajectory. When the emperor falls, all remaining Shav'Wani enemies die with him, and a path to the desert opens with rewards nearby — jump off the cliff's edge to enter it.

Check

This strategy comes from the Into Indie Games complete SULFUR walkthrough, checked 2026-11-06 against the game's current 1.0 version. Exact HP values, enemy counts and drop rewards for this fight remain unconfirmed by the developer.