Time played: 1:53 and my first inbound enemy attack was a huge blue biter who singlehandedly took out four turrets and withstood all of my bullets before killing me. I don't know if having Misanthrope would have caused any issues, but that's the only mod I have aside from yours.

Well, that's a big biter, not a behemoth. have you been polluting excessively or killing lots of biter bases? Either one of those can increase pollution. Note: not bob.

Yes, at 1:53 you need to have done a few levels of damage research for most bases with normal pollution levels, especially if you've gone out and destroyed a few nests.