Genetics: The Good, The Bad and The Ugly

[Roomba]

Before the stability mechanic was introduced, invisible TK hulks who could walk through walls and were completely impervious to most damage were a common sight by the twenty minute mark. Not exaggerating in the slightest.

Genetics got a buff a while ago, and then got nerfed a bit when people rightfully got tired of invincible rampaging geneticists. It's currently balanced as it is.