Headshots should always count. I thought this was a Bungie game.
English
#Destiny
-
I don't think it should crit. If it does, then all supers should crit. If you are using GG in PVE to kill trash or even do damage on bosses, then you clearly have primary and special weapons that are in serious need of an upgrade. The only time I see somebody pop GG anymore is to kill Shanks, and even then it's a waste since the IceBreaker could've done the same.