Suffer not alien achievement/ the worm

[Xenith_Shadow]

So while trying for the suffer not alien achievement as the Commonwealth of man i ran into 2 thing im unsure about.
Do i need to defeat the united nations of man to gen the achievement.
Will embracing the worm break the acheivement

 

[TheBromgrev]

Go to your species tab. To get the achievement, there has to be only one species in the list. If the UNE has the same founder species as you, then you don't have to defeat them. You know if their founding species is the same as yours if you only see one non-gene modded human in the species list.

I would imagine that embracing the worm would not change your founding species, so you'd need to purge the new pops.

 

[Malonex]

Kill all aliens, including humans that aren't your founding species