Sightstealer

The sightstealer is an entity added by the Anomaly DLC. It is likely to be one of the first anomalous entities a colony will encounter.

Occurrence[edit]

Sightstealers appear:

In the sightstealer arrival event.
When a creepjoiner becomes hostile due to friendly fire and has the Sightstealer attack drawback.

Summary[edit]

For further detail about howling and multi-wave sightstealer attacks, see Sightstealer arrival.

Sightstealers are ambush predators, entering a map invisible to both pawns and the player, and remain so until they get close to a target. Targets of a Sightstealer includes colonists, friendly NPCs, and raiders. ^{[When is invis broken?]}^[Targets?]^[Doors?] The player is not notified of a Sightstealer arrival, unless they are summoned by attacking a creepjoiner, in which case the player is only notified in advance. Sightstealers are also revealed from invisibility when they take damage, get hit by firefoam or an EMP explosion, or they are affected by a disruptor flash, Sightstealers will return to being invisible when not nearby any targets. Invisible sightstealers will trigger proximity detectors when in range, however they will not be revealed by it. Additionally, they will make a howling sound effect and track filth even when invisible, you can look for this to narrow down their location, instead of using a proximity detector.

Despite the description stating that it uses psychic influence to render themselves invisible, pawns with 0% psychic sensitivity are not immune to this effect, and are unable to see them when they are invisible.

Sightstealers do not trigger traps regardless of their current visibility.

They are relatively weak entities in terms of both DPS and HP, feel pain and bleed and have a high psychic sensitivity of 200% - instead the primary risk comes from ambush and numbers.

They do not sleep and bleed at 50% the normal rate.

Containment[edit]

The Sightstealer is fairly weak, requiring only 30 containment strength. This means you can use wooden walls and a basic holding spot to contain it with minimal risk.

Contained sightstealers yield 1.6 bioferrite per day when attached to a Bioferrite harvester.

Analysis[edit]

Only marginally more dangerous than an unarmed baseliner but with claws that can cause bleeding, a single sightstealer is unlikely to be a threat to most colonists. However, they can be dangerous in large groups especially if a pawn is caught by surprise. Their speed means that they can quickly surround pawns and, unlike manhunter packs, sightstealers give no warning for pawns to run inside. As such, if the initial sightstealer is spotted, a howl occurs, or "Distant shrieks" are heard, it's best to zone your colonists inside, install a proximity detector or turn up the game volume and listen for their howling sound.

 Sightstealer revealed: A twisted creature has appeared out of thin air!

Once they are detected, combat is largely similar to manhunters despite their anomalous nature. A constriction, strong Melee blockers and a good backline of gunners can handle even the largest sightstealer waves. Carefully targeted frag grenades from behind the melee blockers are also particularly devastating. Sightstealers are also vulnerable to fire. A pawn armed with an incendiary launcher, molotov cocktails, or incinerator can easily cripple even a pack of sightstealers but watch out for burning sightstealers losing collision and moving through your blockers.

If the colony contains a mechanitor, scythers, scorchers, tesserons, and centipede burners are effective counters. If a sightstealer howls, drafted mechanoids are valid targets for the sightstealers, and they will reveal themselves to attack. This can be used to force sightstealers to become visible before they draw close to colonists.

Sightstealers is one of the easiest anomalies to contain, both in terms of containment requirment and risk posed during escapes. When combined with the ease of defeating them, they are effectively a blessing to most colonies, providing an easy source of beginning research.

Health[edit]

The body part table is collapsed due to length. Expand to view.

Part Name	Health	Quantity	Coverage^[1]	Target Chance^[2]	Subpart of	Group^[3]	Capacity^[4]	Effect if Destroyed/Removed
Torso	30	1	100%	15%	N/A^[5]	Torso	-	Death
Neck	18.75	1	7.5%	1.5%	Torso	Neck	Eating Talking Breathing	Death
Head	18.75	1	80%	1.74%	Neck	UpperHead FullHead HeadAttackTool^[6]	-	Death
Skull	18.75	1	18%	0.216%	Head	UpperHead Eyes FullHead	-	Cannot be destroyed Increasing Pain based on damage.
Brain	7.5	1	80%	0.864%	Skull	UpperHead Eyes FullHead	Consciousness	Death Damage always results in scarring.
Eye	7.5	2	7.0%	0.42%	Head	FullHead Eyes	Sight	−25% Sight. −100% if both lof both lost. −15 Disfigured Social penalty Damage always results in scarring 0% Hit Chance against Blunt damage.
Ear	9	2	7.0%	0.42%	Head	UpperHead FullHead	Hearing	−25% Hearing. −100% if both lost. −15 Disfigured Social penalty
Nose	7.5	1	10%	0.6%	Head	FullHead	-	−15 Disfigured Social penalty
Jaw	15	1	15%	0.8991%	Head	Teeth FullHead Mouth	Eating Talking	−100% Talking and −90% Eating −15 Disfigured Social penalty Can no longer use Teeth attack.^[7]
Tongue	7.5^[8]	1	0.1%	0.0009%	Jaw	FullHead	Talking	−100% Talking and −50% Eating −15 Disfigured Social penalty
Waist^[9]	7.5^[8]	1	0%	0%	Torso	Waist	-	N/A
Spine	18.75	1	2.5%	2.5%	Torso	Torso	Moving	×0 Moving^[10]
Ribcage	22.5	1	3.6%	3.6%	Torso	Torso	Breathing	Cannot be destroyed Up to −48% Breathing. Increasing Pain based on damage.
Sternum	15	1	1.5%	1.5%	Torso	Torso	Breathing	Cannot be destroyed Up to −48% Breathing. Increasing Pain based on damage.
Stomach	15	1	2.5%	2.5%	Torso	Torso	Digestion	−50% Digestion
Heart	11.25	1	2.0%	2.0%	Torso	Torso	Blood Pumping	Death
Lung	11.25	2	2.5%	2.5%	Torso	Torso	Breathing	−50% Breathing. Death if both lost
Kidney	11.25	2	1.7%	1.7%	Torso	Torso	Blood Filtration	−50% Blood Filtration. Death if both lost
Liver	15	1	2.5%	2.5%	Torso	Torso	Digestion	Death
Shoulder	22.5	2	12%	1.68%	Torso	Shoulders	Manipulation	−50% Manipulation. −100% if both lost
Clavicle	18.75	2	9.0%	1.08%	Shoulder	Torso	Manipulation	Cannot be destroyed Up to −48% Manipulation. Increasing Pain based on damage.
Arm	22.5	2	77%	6.0984%	Shoulder	Arms	Manipulation	−50% Manipulation. −100% if both lost
Humerus	18.75	2	10%	0.924%	Arm	Arms	Manipulation	−50% Manipulation. −100% if both lost
Radius	15	2	10%	0.924%	Arm	Arms	Manipulation	−50% Manipulation. −100% if both lost
Hand	15	2	14%	0.827904%	Arm	Hands	Manipulation	−50% Manipulation. −100% if both lost Can no longer use Fist attack^[11]
Pinky	6	2	6.0%	0.077616%	Hand	Hands LeftHand^[12] RightHand^[12]	Manipulation	−8% Manipulation. −16% if both lost
Ring Finger	6	2	7.0%	0.090552%	Hand	Hands LeftHand^[12] RightHand^[12]	Manipulation	−8% Manipulation. −16% if both lost
Middle Finger	6	2	8.0%	0.103488%	Hand	Hands LeftHand^[12] RightHand^[12]	Manipulation	−8% Manipulation. −16% if both lost
Index Finger	6	2	7.0%	0.090552%	Hand	Hands LeftHand^[12] RightHand^[12]	Manipulation	−8% Manipulation. −16% if both lost
Thumb	6	2	8.0%	0.103488%	Hand	Hands LeftHand^[12] RightHand^[12]	Manipulation	−8% Manipulation. −16% if both lost
Pelvis	18.75	1	2.5%	2.5%	Torso	Torso	Moving	Cannot be destroyed Up to −96% Moving. Increasing Pain based on damage.
Leg	22.5	2	14%	9.8%	Torso	Legs	Moving	−50% Moving. −100% if both lost
Femur	18.75	2	10%	1.4%	Leg	Legs	Moving	−50% Moving. −100% if both lost
Tibia	18.75	2	10%	1.4%	Leg	Legs	Moving	−50% Moving. −100% if both lost
Foot	18.75	2	10%	0.854%	Leg	Feet	Moving	−50% Moving. −100% if both lost
Little Toe	6	2	6.0%	0.084%	Foot	Feet	Moving	−4% Moving. −8% if both lost
Fourth Toe	6	2	7.0%	0.098%	Foot	Feet	Moving	−4% Moving. −8% if both lost
Middle Toe	6	2	8.0%	0.112%	Foot	Feet	Moving	−4% Moving. −8% if both lost
Second Toe	6	2	9.0%	0.126%	Foot	Feet	Moving	−4% Moving. −8% if both lost
Big Toe	6	2	9.0%	0.126%	Foot	Feet	Moving	−4% Moving. −8% if both lost

↑ Coverage determines the chance to hit this body part. It refers to the percentage of the super-part that this part covers, before its own sub-parts claim their own percentage. For example, if the base coverage of the super-part is 100%, and the coverage of the part is 20%, 20% of hits would hit the part, and 80% the super-part. If the part had its own sub-part with 50% coverage, the chances would be 10% sub-part, 10% part, 80% super part.
↑ Target Chance is the actual chance for each part to be be selected as the target when each part's coverage has been taken into account(I.E. Neck covers 7.5% of Torso but Head covers 80% of Neck so it actually has only a 1.5% chance to be selected). This is not pure hit chance, as different damage types propagate damage in different ways. See that page for details.
↑ What apparel coverage covers this body part.
↑ Note that capacities can affect other capacities in turn. Only the primary effect is listed. See specific pages for details.
↑ This is the part that everything else connects to to be considered 'connected'.
↑ Allows a blunt attack of Power 5, Cooldown 2, Chance factor 0.2
↑ A Bite attack of Power 8.2, Cooldown 2 seconds, Chance Factor 0.07
↑ ^8.0 ^8.1 This part has no explicitly defined HP. As such, it uses the default max HP of 10
↑ Called "Utility Slot" in game.
↑ If Moving drops below 16% a pawn cannot move.
↑ A Blunt attack of Power 8.2, Cooldown 2 seconds. The first attack can stun for 14 damage. One for each hand.
↑ ^12.0 ^12.1 ^12.2 ^12.3 ^12.4 ^12.5 ^12.6 ^12.7 ^12.8 ^12.9 Only the relevant choice of LeftHand OR RightHand will apply, not both.

Attack table

Sightstealer
Attack (Damage type)	DPS^[1] (Post Hit Chance)^[2]	Dam.	Cool.	AP	Selection chance^[3]
Average	3.5 (2.17)	-	-	10%	-
LeftHand (Scratch)	3.5 (2.17)	7	2s	10%	50%
RightHand (Scratch)	3.5 (2.17)	7	2s	10%	50%
HeadAttackTool (Blunt)	1.5 (0.93)	3	2s	4%	0%

↑ Note: This is the actual base average derived from the melee verb system updated in 1.1.2610, it may sometimes disagree with the listed value in the in-game infobox.
It may also change depending on the stats and the melee verbs available to the pawn.
↑ Assuming a melee hit chance of 62%
↑ Chance for attack to be selected. It may change depending on the melee verbs available to the pawn.