Campaign

Generalities
Forts' campaign is a set of levels organized in 3 different "theaters", which are major parts of the campaign.

Each part is composed of a few levels, that each offer 3 "achievements", displayed as oil drops that are full when the achievement is unlocked.

You need a minimum of those oil drops in one part in order to access the next one, until the 3rd part which then lets you play the final level, the "Motherlorde"

The campaign is playable in 3 difficulties, easy, normal and hard, which correspond to AI's difficulty. Hard difficulty used to disable auto-AA, but it no longer does because only a few players finished hard campaign.

Major parts
As said above, the campaign is composed of 3 major parts