This War of Mine: Final Cut

As per the first time this achievement was available, Bandits came in packs like hungry wolves. We beat them back every night. And everyone survived.
Like the first iteration of this game, you need to survive the "Outbreak of crime" random event, without being robbed.

NOTE - Being robbed BEFORE this event occurs will not void the achievement.
EDIT - A commenter has pointed out you can be robbed during the event and it will not void the achievement, you just can't have any casualties during said event.

This is done by playing a scenario with at least a medium or higher "intensity of the conflict" modifier to it. NOT having winter is also a must, as crime is naturally lower during winter and I'm pretty certain the event won't trigger during winter.

You will know if the event is about to occur as using your radio and tuning it to a news station will have the message that crime has been increasing by a vast margin.

The Outbreak or Crime has its own unique beginning of day/ end of night background, as opposed to the vacant looking city that just says, for example, "day/night 11".

You are going to want to upgrade your workshop to level 2, and construct all three "Board up" construction options, so your house has zero holes in it. When the event officially starts, you will want to have two people on guard duty at all times. You will need all survivors to be armed as well. I was getting by with a crowbar and an AK.

(An easy to obtain AK is in the supermarket (soldiers) level. Sneaking through the first two doors and ambushing the soldier with a melee weapon will net you an AK and at least 20 bullets.)

When the event ends, should you have lost absolutely nothing (Getting injured seemed to be okay previously but I would value any input) the achievement will unlock.

My first attempt to bag this had the event show up on day 18, and my game ended before the crime spree. I would thus suggest you make your game at least 30 or so days long, stock up as much as you can beforehand, and ride out the event when it occurs.

TIPS :
*Your survivors can go two days for every cooked food item, you don't need to eat the moment they are "hungry". Important if you hit the event with low food stores.
*Crowbars and shovels count as weapons, and seemed to work better for me than just knives
*Roman is skilled in combat, and making a custom survivor who is a police officer makes them handy with guns. I'm unsure if this effects house defense, but again I have in the past attempted this cheevo with just melee weapons, and is how I unlocked it in the previous version of this game.
*I am unsure if a sleeping survivor "wakes up" during a house defense, but I always ensured I had one weapon per survivor, not just house defender.
*You can create your own armor with an upgraded metal workshop. It is automatically used during house defense if it is in your inventory.

I will gladly respond to comments or update this guide as more info is presented, and as always
Happy hunting (>*_*)>