But blindfiring an unhelmeted armored guy makes him 1HK for melee.
I'm sure you know that, right?
Blindfiring unhelmeted chokers... yup
otherwise the other armored NPC's are 1HK, once the helmet is off.
Works on chokers too. What I always do is focus aim on armoured guys' helmets, chokers included, then blindfire up to them and punch them to kill them. If you follow up with blindfire too melee it will always be a 1 punch kill. Very helpful so you don't do the long 2-hit melee animation.