Unnatural corpse
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Unnatural corpse
An Unnatural Corpse is an entity that appears in your colony via events. It looks like a copy of your still-living pawns. As soon as you get the corpse, its original copy will suffer from a mood penalty as well as the corpse sometimes teleports near to it.
Removal
There is no way to get rid of the corpse as it will reappear eventually. Once it "wakes" up, it will chase and hunt its original, where the victim will be hypnotized for several seconds before their brains get consumed. The unnatural corpse is challenging to kill, similar to a Ghoul's unnatural regeneration but faster. The only way to get rid of the corpse before it awakes is to study it which takes several days. After that, you'll get a notification that your colonist will be able to remove the shard implanted on the corpse, which will destroy it. You can still keep it around optionally to study as it gives "advanced research points" for the dark research tab.
Killing
The duplicates invincibility is limited and if you damage it enough you can break the extreme healing causing it to be killed easily. It is recommended to make sure the original colonist is far away to prevent them from being killed.[Needs more testing].
Occurence
When the corpse spawns the notification will state that "it looks exactly like (name of colonist)" and "the only difference is that it feels waxy and warm to the touch"
Summary
When the corpse first spawns a notification will appear stating that "it looks exactly like (colonist) in every way" And " the only difference is that it's waxy and warm to the touch ". the corpse will teleport towards the colonist it looks like should they get to far. It is also worth noting that the colonist will gain a permanent mood debuff until the corpse is destroyed, the corpse acn only be destroyed if it has been studied for multiple days. [needs confirmation]soon after this notification will appear stating that "it appears to be creating some sort of consciousness" and " destroy the corpse before its too late". Soon after that message appears the corpse will start to move and will get up and chase down the colonist it's looks like, when it catches them the will paralyze them and kill them. Disappearing after. You also cannot use a Resurrector Mech Serum on it as it will fail and the serum will still be used.
Analysis
Having the Royalty DLC makes it significantly easier to kill the corpse. A skip strategy could be used, teleporting the unnatural corpse or the pawn when the corpse get too close. The focus psycast could be used too to increase the moving speed of the pawn, or the pawn could be given a jump pack to buy time. Without Royalty, bionic or archotech legs can be used in conjunction with drugs. This enables the pawn to get a moving stat above 200%. The unnatural corpse's maximum speed is 300%, but it will take some time before it reaches that.
To kill it, approximately ~1600 damage needs to be inflicted to the corpse. The exact amount differs, but the rapid regeneration energy has approximately ~270 hp, while the awoken unnatural corpse hediff has a 20% incoming damage multiplier, leading to ~1350 damage that needs to be done before you can damage it normally (although damage will still be decreased by 80%). With five or more colonists with high dps weapons this can be achieved reliably (e.g. high quality chain shotguns). By the time the corpse will outspeed your pawn it will be close to death.
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