I am curious about how others handle the Easy/Hard mechanic for monsters attacking the PC’s. I have liked the Advantage and Disadvantage mechanic and have used that in the past, but I also like the Easy/Hard rule and use that a lot for PC’s attacking monsters or accomplishing tasks in the encounter. I was wondering if you also apply that rule to the monsters attacking PCs, so if a monster is trying to attack a PC who has cover, do you add 3 to the PCs Defense/AC? Likewise, if a PC is stuck in goo and can’t move, do you subtract 3 from their Defense/AC?
Does anyone use both Advantage/Disadvantage and Easy/Hard? How do you decide when to use each?