# whatever: If you find a trove of supplies, you are about to require every last one of them because a boss is coming up.
# whatever +1: All NPCs are deaf to the yelps/gurgles of their nearby allies, therefore you may slit the throat of/strangle/break the neck of their friends with impunity.
# whatever +2: Changing clothes takes 2 seconds, whether you're changing from a pair of overalls to a business suit or a marine's dress uniform.
# whatever +3: As long as you and the person you're impersonating are bald and/or wearing glasses, nobody will recognize you.
# you get the idea: Armour will last forever, no matter how many bullets/lasers/explosions hit it.
# somethingorother: Always keep an inexperienced person on your team to open the doors.