The Tun: water is its weakness.

What it is

A giant water bear, eight-legged and the size of a ship. Real tardigrades survive open space, boiling and freezing by drying into a "tun"; a drop of water brings them back. This one does the same.

Where and when it comes

• Any world that is not home, including the airless moons. Nothing out there can kill it.
• It comes 40 to 55 metres from someone on dry land, rarely.
• After one is slain, another cannot come for about 30 minutes. The Codex hint is "Eight-legged tracks on a dead world".

How it fights

1. Biting. It bites whoever is at its mouth, for 28 damage within about 3.2 metres.
2. Stamping. It stamps on whoever is under its front, for 22 damage in a 5 metre circle.
3. Drying. Every quarter of its health it loses, it dries into an armoured barrel. For 25 seconds it shrugs off every blow.
4. Softening. Rain on it, or a lake you lure it into, makes it soft for ten seconds, and it takes double damage. A soaked barrel swells open at once.

Stats

Thing	Value
Health	800
Length	About 6 metres body, with eight legs
Bite	28 damage
Stamp	22 damage in a 5 metre circle
Signature: Ember Pulse	A ring 6.5 m round it, 12 damage, about every 11 seconds
Sees you from	60 metres

Tips

• Plan for water. Lure it toward a lake or wait for rain, and then strike while it is soft.
• Do not fight it during its armoured spell. Wait for the soft window.
• Keep clear of its mouth and its front legs.

What it drops

Drop	Amount
Chitin	18 to 27
Comet ice	6 to 10
Voidsalt	3 to 5
Gold pieces	2 to 4
Trophy	Tun Ember

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