Leeches

ARC-470-A, designated as Parasitic Leeches, are biologically anomalous creatures produced by ARC-470. These leeches are key to The Tenant's hunting strategy, diminishing player movement and alerting it to their location.
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=== Description ===
The leeches are dark red and make alien-like squeals. Despite lacking visible eyes or a nose, they are capable of tracking players from any distance and direction, even when players are silent and scentless. This suggests they can both hear and "see," though the exact mechanism is unknown. For example, whistling will immediately attract them.
When leeches latch onto a player’s leg, they slightly reduce movement speed, with the effect becoming harsher if multiple leeches are attached at once. After a few seconds, a leech will explode into a cloud of stink gas, creating a strong scent that attracts ARC-470.
Leeches have a crawling animation while moving but no idle animation—they appear completely motionless when still. They can crawl across diagonal surfaces like slopes without sliding or tipping, remaining upright regardless of the angle. When making their alien noises, they do not perform any animation.
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=== Interaction and Mechanics ===
Leeches can be squished by jumping on them or by throwing objects at them. Upon being squished, a leech will deflate like a balloon with a gory crushing sound, spraying blood everywhere that disappears over a short period of time. Their immobile bodies remain on the ground, and their physics allow players to move them around using objects. However, if a player looks away from a leech's body, it will instantly despawn.
Leeches cannot smell, and their behavior is not influenced by smell traps. They are more of a nuisance than a significant threat, as their impact on movement is minor, and they explode quickly after being attached.
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=== Additional Notes ===
* Leeches are spawned infinitely by ARC-470, with no limit to how many can be present in the game at once. The Tenant will continue to produce them endlessly.
* When a leech bursts into stink gas, the effect is small but powerful, immediately alerting The Tenant and other entities that can smell, regardless of their place on the map. Stink balloons, stink bombs and stink eggs have the same effect.
* Despite their small impact on player movement, leeches can track players quite effectively, as they can see them from anywhere across the map as long as there is no wall blocking their view.