Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - Enhanced Edition Stuck on the Temple of the Dead

The DK Bane spell doesn't work on sentinels in the EE. The Teleport spell does, so you may be able to teleport them somewhere they can not see you.
There are heavy crates in the area that you can put on the traps. You can try using something non-flammable to block lava vents, like cooking pots.

The area behind the skull area is just a dead end. You're not meant to be able to get through.