What the Rat Turret Does
The Rat Turret gives Hull Rupture’s defenses a particularly strange tool: its hits transform the target into a rat. That effect was introduced in demo patch v0.10.12 on September 25, 2026. If you are checking an older demo guide, this turret may not appear in its weapon selection at all.
The official Rat Turret patch announcement confirms the transformation. It does not provide a damage table, a transformation duration, or a list of eligible enemy types. Treat the confirmed effect as a reason to explore the turret, rather than proof that it instantly defeats every threat.
Fit It Into a Defensive Route
Hull Rupture’s turret choices work together with the shape of the ship. Enemies travel across the hull toward the Airlock, and corridors can change the route they take. Before committing a useful position, examine where that position can actually engage approaching enemies.
The developers’ construction guidance distinguishes open positions for long-range weapons from enclosed spaces for short-range weapons. Apply that principle to the range shown for the turret in your run; the Rat Turret announcement itself does not establish which of those categories it belongs to.
A practical placement check is:
- Identify the approach route you need to cover.
- Check the turret’s displayed range against that route.
- Keep other defenses covering enemies that reach the Airlock.
- Consider the resources needed for the rest of the defense before expanding.
These are layout decisions, not a tested Rat Turret build or a claim about boss immunity.
Shop Changes and Relocation
The September demo update replaced individual shop kits with themed boxes for modules or turrets. The September 25 patch also adjusted kit randomization so that kits not yet seen during a run were more likely to appear, while recent repeats became less likely. Neither announcement promises a guaranteed Rat Turret offer.
Turret relocation can help when a previously valuable position needs a different weapon. The September update makes moving turrets free in resources, but moving takes time and is followed by downtime. Plan a relocation before the position becomes critical; moving a turret is not a dependable way to keep it firing continuously along an entire boss route.
FAQ
Which patch added the Rat Turret?
Demo patch v0.10.12, released September 25, 2026, added it.
What happens when it hits an enemy?
The official description says the target becomes a rat. It does not specify a transformation duration or detailed damage behavior.
Does it work on every boss?
The cited patch does not list boss interaction or immunity rules. It cannot support a universal boss-control claim.
Can I guarantee it from the shop?
The documented randomization changes reduce recent repeats and favor unseen kits, but they do not establish a guaranteed way to obtain this specific turret.