Black Crusade (2011), p289 — Characters Embracing Nurgle

Killing a powerful foe (at least as dangerous as the PC) with poison, disease, or Nurgle psychic powers earns 1 Corruption Point.

Slaying a Champion that has embraced Tzeentch earns the character 1d5 Corruption Points and 2 Infamy.

Wiping out or infecting large populations with disease or contagions earns the character between 1 and 3 Infamy depending on the depths of the deception (GM's discretion).