Recently, I got the Xenonauts: Xenophobia mod, and I've noticed that the later tier aliens seem like absolute bullet sponges. Sebillian warriors tanking 4 alenium grenades with barely any damage, wraiths practically ignoring shots from a large bore alenium shotgun, etc. I decided to tinker with the alien's resilience and armor values (along with accuracy for some), but I've found that the game is now too easy. Any recommendations on a good balance between alien's not being bullet sponges while at the same time not being made of glass?