Base defence

There is no such thing as a fully protected base in EXO. The job of defence is to make the raid cost more than what is inside.

Concrete is twice as tough as wood#

This is the main decision you make.

Structure	Wood	Concrete
Wall, foundation, window, floor	3 charges	6 charges
Door, gate	2 charges	4 charges

Now remember where C4 comes from: plastic explosive drops only in military buildings and Military Cache crates, it is rare, and one charge needs two pieces. Explosives are always scarce on the server.

A single concrete wall eats six charges — that is a serious commitment, not a casual raid.

Layout beats thickness#

A raider takes the shortest path to the loot. Simple things work:

• Double walls. There should be more than one barrier between the outer shell and the safe.
• Never put the safe against an outer wall. One wall plus the safe is 6 charges and a minute of grinding.
• Doors are cheaper than walls. A wooden door is two charges, a concrete wall is six. Do not put a door where a wall would do.

Safes open, but slowly#

A safe cannot be blown. It is breached with a grinder — 60 seconds of uninterrupted channelling from 2.5 metres. Any movement cancels it.

That is your window: the raider stands still for a minute and cannot shoot back. With cameras watching or clanmates nearby, a breach can be interrupted.

Put the flag inside the perimeter#

Stealing a flag takes 60 seconds and freezes the base for a day — but only if the thief can reach it.

You cannot pack structures right against the flag: a 1.2 metre clearance around it is always enforced. But walling it in at a distance is possible and necessary. A flag behind the perimeter means it cannot be stolen without breaching first.

The classic beginner mistake is planting the flag at the edge and building off to one side. Such a base is taken without a single C4 charge.

On top of that comes the choice of location: away from roads and towns, so the base is never found at all.

Surveillance cameras#

The mod has a surveillance system: a laptop and cameras that mount on walls. Cameras only cover what falls inside your territory radius.

All of it runs off a generator. The generator is found as loot, placed on your territory, filled from a jerrycan and started with its own action; it burns a litre an hour, so a full tank lasts about forty. With no generator running, the laptop will not open at all.

C4 will not attach to cameras, laptops or the generator — they simply get shot, and they do not have much health. Destroying a wall leaves its camera hanging in mid-air.

What defence does not give you#

• No regeneration. Every breach is repaired manually with materials — half of the structure's recipe — and only after the raid ends.
• Base level adds no durability. It gives radius, structure limit and garage slots — a level 3 wall is the same wall as a level 1 one.
• Upkeep matters more than walls. An expired base loses every PIN code and dumps its vehicles outside — worse than any raid.