Do you roll additional dmg dice for critical dmg inflicted also, or just regular damage dice?

Righteous Fury applies to all damage rolls -- critical damage is just regular damage pushed past the Wounds threshold.

The Emperor protects!

So every crit, multiattack, etc...that does damage and makes a righteous fury roll (or in the case of Deathwatch training, damages a xeno), gets ANOTHER damage roll ADDED to it!? :-0 Wow!

Still, can you give books (w/ page numbers) and quotes from said pages to back it up plz?

Righteous Fury gives you another d10 damage if you make a 10 on a damage dice, and you have passed another attack test (auto success in case of Deathwatch vs Xenos).

For Instance, you shot an ork boy with a bolter : you roll to-hit, then you roll to damage, get a 10 (10+9 = 19dmg for now), and roll another d10 for Righteous Fury (autocomfirmed because of Deathwatch Training). Say, this d10 roll 8 for a total of 27dmg. Then, just reduce this amount by armor & toughness values for total damages.

Has Lynata said, critical damage is just a threshold : when you wound someone to a negative value, it just add effect from the critical table to the damages.

Indeed, good addition/explanation.

I don't have the book by hand to provide a quote, but I remember it was on page 245 as I was re-reading it yesterday to make sure I got it right -- for RF works differently between some games of the 40k RPG lines.

PS: Sorry for putting this in the wrong forum. I should've put this in rules questions. Still ty for your aid.

Note that the RF was radically changed from the core rule book to the errata.