>>537768521
I'm still in favor of the idea of having to call the police and they'll arrive within 2-3 minutes but you have a cool idea regardless.
There also could be a way to get rid of 1v2s by finding a flare in a random chest (which would make them not as useless) that would be used to either stun the killer for 3 seconds and set him on fire or climb onto the tallest point of the map and call for help that way, after few minutes passing - both doors would immediately open.