Dungeons of Necromancers

The path to the dungeons of necromancers is open.
You have to fight with many necromancers and their creations.

Defeat all enemies in the dungeon to open a portal to the next dungeon.
With each dungeon, enemies get stronger, fiercer and bigger.

All walls in the dungeons are completely destructible. Destroy dungeons to reach opponents or find treasures.
You can not only destroy but also build walls. Use this ability in combat.
Put walls in front of the enemy to get a tactical advantage.

On the way of your journey there will be potions that increase the parameters of your character.
Potions can be bought in the store, which is in each dungeon, but they need to be found.

Also, your character has a permanent progression. Before the new descent into the dungeon you will get to the character upgrade menu.
Unlike potions, upgrades remains forever, even after the death of your character.

How deep can you descent to the dungeons?