The assassin droid (hereafter known as AD) comes under attack from Farlander as Veers falls back from AD's attack. AD is able to get its ray shield up, and as it attacks Farlander, one of Farlander's shots goes wild and blasts one of the toxic slaves, released the trihexalon and beginning to kill everyone.
Meanwhile, the Farlander Assassin Droids continue as they did, killing the Director and the Co-President, then shooting the toxic slaves, before turning on Farlander.
Farlander is eventually overwhelmed and is destroyed. The Farlander Assassin Droids, their primary targets terminated, shut down.
Then see what AD does from there.