I nearly finished the first tower (EoR) that I presented some posts before.
The tower's AI is completed. Including upgrades, targeting, effects and special features I will reveal later. The only thing left for this tower are the "sell"-animation and some details of the "building"-animation.

But I'm very happy with the behaviour. Even in complex situations the tower acts right.

The AI of the other towers will be widely similar and so the AI programming is nearly completed...