IIRC you never actually have to shoot any of the civilians in that level, but as players we all assumed that you did. IMO that level was the most interesting commentary that has been made in the COD series because it (somewhat sneakily) put the onus onto the player. Most of us just assumed that we needed to gun down the civilians without choice. In my opinion its one of the more poignant moments in the entire series for how it handled such a grim story beat.

If you’re playing games that give you a response with your heart rate, them id say that’s probably a bit risky. Would definitely be worth asking your doctor as I am not a medical professional. Could be worth trying some more chill games that don’t produce an adrenaline response like that.