Actually what title says. I have tried everything coming to my mind on heresy and damnation. I used box of hurt with the relevant feat active, the rumbler and the grenade launcher. Nothing seems to work. I still have 0 out of 5.
I would appreciate some insight here.
Try Rumbler grenade launcher, made it in 1 match.
You need to make consecutive 4 elite/specialist hits to get 1 (no missing, repeat 5 times)
Or maybe they really broke something (like with “One In the Chamber” not going above 5), try to report a bug in that case.
Soo… I have to actually use the rumbler and hit 4 elites/specs without missing one with the actual grenade? Not with the explosion of the grenade? Well this i will try in the next gaming session. Thanks mate.
Yes, a direct hit with a projectile 
pretty sure rumbler working for this have been corrected with patch 10.
you need to direct hit four without missing, idealy play with a sharpshooter with grenade aura and focus on boss, mutant and ogryn. or elite that are idle
Not anymore.
If Rumbler thing was fixed then yeah, this is your only option:
Or just casually pick up grenades and throw them at elites/specialists (without a miss).
You got 2 on start and 2 more on pick up, hitting with them all will get you 1 point closer.
The penance doesn’t work/count if you use ‘Bombs Away!’ feat (box that releasing multiple grenades around the target when it hit). Not sure why.
Make sure you unequip the feat.