The Etcher: lure it onto limestone.

What it is

A giant snail under a spiral shell of acid-green glass. It crawls over the vitriol barrens and caustic mires of Phaton, the acid world, and etches trenches across the ground as it goes. It is based on limestone, which neutralises acid, which is why limestone country shrugs off acid rain.

Where and when it comes

• On Phaton only, on the Vitriol Barrens and in the Causticmire.
• It crawls in from 40 to 55 metres from someone out on the barrens or the mires.
• After one is slain, another cannot come for about 30 minutes. The Codex hint is "Trenches etched across the barrens".

How it works

• Etching. Its foot sweats acid, so the ground dissolves under it and walls in its way melt. Vitriolite and waxbark resist it.
• Hawking. It hawks gobs of acid at you that eat at you and at your suit. An Acid Suit keeps most of it off.
• Biting. It bites whoever comes near its head. Its bite does 22 damage within about 3 metres.
• Neutralising. Lure it onto limestone, chalk, marble, quicklime or lye, or lay it a floor of them. It fizzes, its acid spent, and for ten seconds it is soft and slow, taking double damage.

Stats

Thing	Value
Health	1100
Length	About 5.5 metres
Acid splash	18 damage in a 2.6 m circle where a gob lands
Signature: Acid Trace	A lane of acid 1.7 m across, 12 damage, about every 9 seconds
Sees you from	60 metres

Where to hit it

Its glass shell lets half a blow through. When it is soft from the limestone, it takes double damage, so that is the time to strike.

Tips

• Bring limestone, chalk or marble before the fight. A floor of them under its path is the best trap.
• Wear an Acid Suit.
• Keep your walls away from its path, as they melt.

What it drops

Drop	Amount
Vitriolite	3 to 5
Sapphire	1 to 2
Gold pieces	3 to 5
Caustic moss	8 to 13
Trophy	Etcher Acid-Stylus

← Back to the wiki · Last updated 25 October 2026. Mantlenaut is in alpha, so things change.