I did this with both the corrupted war party build and as a thrall-less 20 vit/str/grit build with all relevant combat sigils. I don’t think any words even exist in the English dictionary to convey the sheer chasm that exists between these two strategies in terms of how easy it is to kill the final boss. I’d rather try to fist Orphan of Kos to death.
Also easier for me with a damage build. Thralls seem to have some problem attacking the boss.
I’m trying to beat the boss, but the bugs and lag on the official servers make it impossible; today, I got disconnected twice while already halfway through the second phase. The last time, after a lag spike, I took an explosion right to the face and died at full health—my health bar literally hadn’t been depleted. And after respawning at the start of the dungeon instead of appearing past the second gate, I just gave up. Atm trying to rescue mt body but cant connect to server error and stuck a 100% loading donte let me rescue it.
Edit: after a lot of time trying to reconnect and recall the body, it expired and i lost everything i was carryng. Enough for me today going to play POE till i get less angry.
That’s the real problem.
Caveat: My server is Barbaric, so increased damage makes the new dungeon more difficult.
A Review:
The Good:
- Lots of space
- Lots of fighting
- Not claustrophobic
- Climbing
- Swimming
- Range of opponents
- Puzzles
- Shortcuts
- Some decent loot
- No need to bring arrows, enemies give you plenty
- No need to bring bandages, enemies give you more than plenty
- Potions absolutely required, can’t sleepwalk through this place
- The Dragon fight is fun
- Specific loot gives you advantages in completing the fights in the dungeon
The Meh
- The end boss fight is orders of magnitude tougher than traversing the dungeon - it is not a logical progression battle journey
- The exit dumps you into the first part of the Dungeon, requiring an exit fight, similar to Kleal’s
- It is a serious time investment
- Boss loot is. often, underwhelming - as someone who, often, got an iron pot for defeating the Red Mother, this is worse
The Bad
- More than the Wine Cellar, a minor misstep = death
- Specific builds are more important than playstyle - an extension of “You’re playing this open world sandbox game wrong!” mesage we have previously received
- Corruption during forge use is a poor choice
- The reward for the opportunity to repair legendary gear is just not worth it
- It feels like and extension of the decision to move boss chests into dungeons to force folks to do dungeons, not worth the effort, to me
Conclusion
The best part of the patch, for me, is that chests and such now close automatically. This new dungeon does not feel worth the time and effort investment to do more than once.
Continuing the discussion from Conan Exiles Enhanced July Hotfixes:
Our whining has been heard. 
I really like the new dungeon. Only complaint is loot from final boss should be a guarantee of something