Speaking of pacifist with thick skin... I had a character in stable.
He wore power armor and tried to hack through the computer guarding some lab goodies, but he didn't knew about computer. Every time he hacked, a secubot or a manhack popped out. His computer skill went from 0 to 3 when he finally succeeded. By then the whole room was flocks of secubot swimming in waves of manhacks. For a moment I was afraid that he would starved inside the robotic walls. Fortunately he wiggled out. The robot army followed him through dissectors and exploded one by one.