Capturing the tower in Divinity 2 is one of the main storyline events, because it gives the character not just a house, but a whole castle - with subjects and, most importantly, a dragon stone that opens up wide possibilities. However, before overthrowing the necromancer, you still need to get to him.
Instructions
Step 1
Before proceeding directly to the capture of the tower, you need to get to the Island of the Guardians in order to pre-select the people who will go with you to this tower. The choice will not significantly affect anything, however, it is preferable to take the captain Hermione with you, because it can give the player a side quest.
Step 2
After recruiting "helpers" go to the Temple of Mahos. Notice to the right of the entrance to the temple a ledge on which there are three candles and a cross - use the book obtained in Hermione's quest and light the candles. Shissai will appear not far from you in the form of a ghost: she will give an additional task "Get the ring". Follow the marker indicated on the map, take the ring and only then go to the entrance to the Tower of Power.
Step 3
The owner of the structure (a certain necromancer) will start throwing meteorites at you: pay attention to the fact that for this he will have to remove the force field. In addition, you will be greeted by a crowd of hired soldiers - you need to break through them not towards the main entrance (serpentine road), but towards the barricades, because there you can find the leader of the mercenaries. Talk to him and finish off the small remnants of the "army", then go down into the catacombs, through which you will fall directly into the tower.
Step 4
In the basement, you will find a room filled with monsters - after killing them, the entrance to the tower will be blocked. Walk around the room and find a prisoner NPC in it, who will tell you that the exit will open if you pull the ring next to one of the doors. Inside the room, click on the brick sticking out of the wall (the obstacle will dissolve in the air) and take the barrel of gunpowder standing in the corner. With its help, and you need to clear the blockage - the main thing is not to stand too close at the time of the explosion. Save as The next room is the Tower of Power itself - unpleasant opponents await you there.