Know Your Enemy

Know Your Enemy is a companion perk in Fallout 4.

Obtaining
To gain the perk, the Sole Survivor must reach maximum affinity with Paladin Danse after completing Blind Betrayal.

Effects
The player character deals 20% more damage against irradiated ghouls, mutated humanoids and androids.

To gain the perk, the Sole Survivor has to be friend with Danse.