The Last Hatred are described as being able to create undead beings by binding their victims' souls into their bodies even after death. They're desribed of using these creatures as a distraction, sending them towards the enemy lines to provede cover for the Kabalite advance. I think Wracks would represent these zombies rather well, being slower and more durable than regular Dark Eldar. Backing them up you'd of course have the Kabalite Warriors of the Last Hatred. The Chronos might also be thematically apropriate for the army, what's with the siphoning of life essence and all.
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Tougher than wet kittens, with armour stonger than the dampest cardboard, we are coming for you!
Kabal of Drowned Hope/Cult of the Fatal Kiss/Dark Labyrinth Coven.