Look how it went…
Like @Muelee said they literally camped in front of my gate. So for the naked prisoners i had to climb walls and kill them outside my walls so the purge can go on. After i killed them i went inside my base again trying to climb my walls, because close to the attached part even my walls couldn’t be climbed.
After i kill some hordes the stygian commander message appeared, yet he was totally invisible. The whole battle took place in the stygian camp since my thralls lured from the spawns. Until then ten minutes only have passed, i had 11 fighters with 1700 armor and master kit on each momentum, so they were literally crashing the waves unbelievable easy. Yet for 30 minutes they were keep spawning. I got bored so i removed my bracelet, my thralls didn’t need me after all so much. Yet when i return guess what? One thrall was fighting the commander the rest were doing nothing and all the wave was slaying one of my thralls that was doing ABSOLUTELY NOTHING. If this is not a bugged reaction, then what is it?
I didn’t made it, my thrall died from bleeding, of course the purge was over because my other thrall killed the commander, but the rest 9 were slacking in the stygian camp doing the e motes… Go figure 

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New purge system! It needs work and feedback, so we better give it, isn’t it?
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