Some of the areas contain this rule, particularly, the Zhan Huo base specifies that rolls of 18 or higher require an ARM roll against damage 13. Does the damage roll occur even if the roll is succesful? Like in Melee, or Fireteam Linked Shotguns and such, that would pump an attribute above or at 20.
The ARM Roll still happens if you're successful (even on crits) and it's still a success, so even if you fail the arm roll you can at least get a consolidation prize by killing the other guy...
So if I have CC23 and I roll 15, which brings me up to 18, I don't get affected by Hostile Enviroment?
I did not even realise it was an existing rule, thanks. I'm guessing that's from the Paradiso book originally?
Right. In game terms, when in an area marked as a Hostile Environment, each time a figure rolls a previously determined dice result (A 20, for example) due to an Order declaration or ARO (It is not applied to Guts Rolls or ARM rolls, for example) it can suffer Damage, The number the player gets on the dice roll to provoke the damage is always the natural number rolled on the dice, ignoring Modifiers applied to that roll.