Ignitite Proof Doors
Very useful for protecting corridors and parts of your base against humans, although it protects from ignitite in the air, mutants can easily destroy it.
Here is an activated Door
Repairing is quite important, sections and units can be repaired, above in the picture you can see a repair unit alone and a repair system activated on the base core.
This type of unit can repair other damaged units, sections of the base, lights, but it does not have armor, meaning it can be easily destroyed.
After you find equipment, weapons, you can equip them on your units, to modify a unit you must find a construction sector or find a special unit type which can be modified.
There are many types of weapons and equipment you will find around the world.
This type of section requires a power flow through it (connect power to it) and also not all types of units can be modified.