I don’t mean to be a party-pooper, but I have some bad news for people who keep suggesting that the boss damage should scale depending on how many players are doing the dungeon. I might be wrong, but I don’t think that’s possible to implement reliably with the tech Conan Exiles uses.
The team has already confirmed that they don’t have instance tech, without which they can’t have any reliable way of determining how many players are doing a dungeon.
That’s not to say that they couldn’t do a half-arsed attempt. For example, they could “lock” the entrance 30 seconds after a player has entered the dungeon and make it unavailable to other players until there are no players left inside. This would, of course, be abused horribly 
Or they could dynamically adjust the damage output of a boss based on a number of players inside a certain radius of it. Make the radius too small, and it’s EZ Cheese – just have someone with a bow outside that radius. Make the radius too big, and suddenly you’ll all get slaughtered just because another group of players came close enough.
And all of that’s on top of the fact that making the damage output scalable is probably a lot of work. That’s not to say it wouldn’t be worth it, but I would rather see that happen after they’ve gotten rid of big bugs and exploits.