Dark-everything: Redeemed gain a bonus to cancel out penalties all rolls to see, attack, or defend in any darkness that otherwise makes other characters’ rolls more difficult. This does not apply when the character is blinded, but it gives them a pretty good reason to put the lights out when in a fight.
Hide in shadows: As nature’s lurkers, redeemed gain a bonus to hiding rolls whenever there’s shadows around. That means enough shadows for them to hide in, of course. At least a 2’x2’ square of shadowed area is enough for them to hide, though the amount should change for smaller or larger Redeemed.