it is recomended to
build a wall with
a click door first,
next build a town
center,then get
XP by getting KOs
1 ko = 3 XP
if you get 100 XP
you get a shipment
with a shipment you can get a fort
a factory or upgrades
fort=2 shipments
factory=1 shipment
upgrades = 50 XP
outpost=100 XP