Yeah that's all of the main story for now. More will be coming in future releases.
Ahh I see. Anyway, the game overall is nice. Bug I found so far: in sublevel two, sometimes when I killed an enemy, the enemy is dead but the sprite is still there. And I cannot end turn no matter if all characters party AP is spended or not, forced myself to alt+f4 and restart the game. Only occured once.