To conquer the last level, kill all the followers of
every tribe and leave only one Shaman alive. Then, put all your
followers together, then make a volcano to make sure they die.
Next, kill the enemy Shaman. The game states that you have won,
but do not press [Space] yet. Wait until the volcano rises
and kills your followers. The game now states that you have lost,
but the level will be shown in blue on the map, and is marked
as conquered.
Strategy: by Wil101