Full analysis
Unlike many other multi-hit dolls, VSK-94's extra hits are additional attacks that are separate from her regular attacks. This means that she can actively retarget and is less likely to corpse whip, provided that her previous bullet lands before the next is fired (which is easier with lower Rate of Fire).
VSK-94 retargets in real-time and does not "stick" to her target. She can also bypass Taunt effects when her skill is active.
VSK-94's ingame skill description is mistranslated. She gains 20% of her current Accuracy (including the Night Penalty) as Damage, but does not "transfer" her Accuracy (which would imply that her Accuracy gets reduced). The extra Damage from this is additive and does not scale with Fairies or other Damage buffs.
VSK-94’s extra attacks are not true “autoattacks” and will not trigger SCAR tile bonuses, though they will proc Px4Mod’s Skill2.
VSK-94's effective RoF cap is 126, but her extra attacks from her Skill (with the Christmas Skin and SPEQ) are effectively capped at 116. As stacking lots of RoF is already bad on VSK, this doesn't actually matter.