Consortium Achievements/But They KEPT TALKING!

Survive to level 21 in the Virtual Trainer during act II making sure the AI hostiles kill all 20 civilians.
There appears to be a glitch that sometimes occurs where access to the first group of civilians is never granted. When that happens, it is impossible to get this achievement. They should be to the left of the exit and you should be able to see them from the start. The second group appears at the beginning of the level 11.
But They KEPT TALKING!