Breacher is a Codex featured in Tom Clancy's Rainbow Six Extraction. It is unlocked by completing the Lookout Study in the San Francisco Region.
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INDEX Analysis:
Breacher variants demonstrate both bipedal and quadrupedal movement. Possibly biomechanical limitation due to oversized dorsal hump.
UNDETERMINED: additional kinematic and kinetic data required.
Reports suggest that Breachers will charge when alerted. This is followed by detonation of their dorsal hump. (QUERY: autothysis - "self-destruct")
The Breacher may alert nearby Archaeans before charging. (Cross-ref: survivor report- "I heard it scream, then... Then it all went to shit. They came from everywhere!")
EXTRAPOLATIONS:
Speculating on dorsal detonation mechanism: Detonation is likely due to a chemical reaction within the dorsal hump. Probability - High. Exact specifications are unknown. Require more data. (INSERT: IQ - Acquiring a viable sample is difficult. They tend to explode...)
Assessing effects of detonation: Force of overpressure waves due to detonation is significant. Results in concussive damage within an area. (QUERY: tactical implications)
ENGAGEMENT PROTOCOLS:
Suggest initiating combat from a distance to avoid proximal detonation. Damage to the dorsal bulge will cause detonation. (INSERT: Thermite - Shoot it before it gets close. I'll pass on the intel.)
Expanding on Tactical implications of exploding dorsal hump: Undetonated Breacher corpses mav be used offensively. Target the dorsal hump when hostiles approach the corpse.