Wow, I'm just super impressed that you could keep him alive!! That entire area turns into a giant fireball of death almost instantly!
Thanks.
Yeah it blew up once and gods did it blew up!
But it is very easy I feel, if done strategically.
First grab as many of these barrels as possible via crouching when not seen.
And start fighting at the deepest end of the hideout, where the two Wolf-owners and treasure rooms are.
I activated the boobytraps with the button and when the enemy on the path was nearby one bomb, I just shot the bomb for example with ranged weaponry or a spell.
And when you killed the group further inside, you can sneak back to the front and start slaughtering them with ambushes pretty easily.
The worst place to start the battle is at the vendor near the entrance of course.
You are below and they have advantage on ranged attacks.
And the hideout is build to be more easily defendable from the deeper one is inside.
Thats why I started fighting right at the end.