The Beast does not respond to its body being torn apart with supernatural obliviousness. Even a combat robot would twitch and jerk as mass-reactive rounds exploded inside its body and tore apart its hand. Instead it simply turns its head, raises its ruined arm to cover the neck joint in its armour, accepts bolt after bolt after bolt -

And then with a screech of machinery and a greasy detonation that leaves a twist of green smoke and a fractal distortion in reality, it is gone. A thick, dark red pattern of bloodstains spreads out in an uncanny pattern around where it had been standing.

[b]Secunda Toros[/b]
Your vat has cracked. Fluids are draining out rapidly. Soon you will be able to undo your rebreather and escape - though you still might desire some assistance so as to not have to crawl over broken glass to do so.

So you have a moment to consider - and regret. Without augmentic eyes you cannot review the footage of what you saw and need to make do with imperfect memory. There are details you missed, but you witnessed the most important one through the reflections on a polished metal wall: the Beast was equipped with a Displacer Field.

A Displacer Field with [i]unsanctioned modifications[/i]. Displacer Fields are almost extinct archaeotech designs, relics from a darker age - they are a combination force field and emergency teleporter; when the aetheric bubble is penetrated by a weapon, it hurls the subject through the Warp to a random nearby destination. Risky, but extremely effective. You yourself possessed one - a gift from ZRK-333.

Because ZRK-333 is one of a vanishingly few Magi who can manufacture entirely new Displacer Fields. Each one must be handcrafted and - between the Magos' other duties and interests - takes around a year to produce. You wore one of her designs as part of your personal defensive panoply, you saw that device every day - you recognize her handcrafted workmanship. And you saw that it had been somehow tampered with. The psychoresonance crystal was exposed, additional power sources were attached, there was a ring of stabilizer beads - [i]someone [/i]had cracked that device open and [i]altered [/i]it.

The result? Instead of functioning as it should, teleporting the Beast a few meters when the bubble was penetrated, it activated it deliberately with a button and is gone altogether. A personal teleportation device - mad. Mad! Even the elite warriors of the Astartes clad in tactical dreadnaught armour only teleport from specialized chambers aboard their starships. To do so in combat conditions passes beyond the boundaries of sanctioned knowledge.