I`ve been playing with my group for awhile but this has come up a few times. The only rules I can find for darkness or being effectively invisible is that you get one setback for darkness, two for total and complete darkness.

I thought these were pretty dang weak for attacking or being attacked when you cannot be seen. Now after the first shots you could say that the fire is going to light up you and the area it hits so you at-least have a fleeting glance of your target, but before that it seems rather weak. Anybody have any ideas for firing blind?

I saw the daunting perception to look for someone with the cloaking suit, which it describes as almost invisible, but that doesn`t work in my brain for darkness or blindness.

I have been house ruling that firing blind, attacking while blind, or if the target is invisible upgrade the difficulty by four. And I only allowed that if they had a reasonable presumption of where the target was in the first place. Does anyone have any better rules they`ve been using? Something more official than my winging it?