As Arach charges passing the construct in the direction of the running one, he sees tiny, flaming lights shoot out from a shadow on a side. One of them takes the running one, burning his last defences and dropping him to the ground, not before he said EXPERIMENT 0 RECOGNIZ- and then falling to the ground.
Two of said lights instead pass alongside him, planting themselves in the construct behind, burning his circuits down.

Spoiler: ooc
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Free of the fight, it takes a 42 to see her (-20 because she attacked)