I was testing if the mission could be won on easy with only worker ants.That's some really bad rng right there. I have never had that happen to me.
On a side note, what do you intend to do with all of those workers? I curious to know what strategy you have in mind.
Insane:Oh well on Easy it should be possible. Hardcore would be medium or hard. ;P
Tried the first story mode challenge on hard mode but I must admit that I always failed due to me probably not having the right strategie OR not enough workers. Like maxing it out and then going in on insane.
I think I got close to doing it but I did fail in the end because I didn't have enough workers taking care of spawning the new brute etc.