Diplomecy is tough in The Lightless Depths...

[Lord Snow]

At least for DM's it is.
the following spoiler tag should ward off any reader who is yet to know the details of the module.
Now:

Spoiler:

The adventure starts with a negotiation scene. Cool, I love it. Adds a new kind of encounter to the game. The table of modifiers to the check according to PCs action was also great but...
nowhere in the entire adventure I could find the DC for the diplomacy check, besides, there should be some different levels of success to this encounter, since its all about shifting Emraags' attitude from unfriendly to helpful, but what if the check is only enough to make him indifferent or friendly?
what do you guys think? if you already ran it, what DC did you rule and how much did it work?

-thanks!

[Triple20]

Hi Lord Snow,

its a standard Diplomacy check - PHB pg 72.

Spoiler:

You set his initial attitude by how well they play the sea skirl thingo, and then its up to them to get him from whatever he starts at up to at least Friendly - at which point he lets the players ship go to the cave.

If they make it to Helpful, he lets any Farshore ship sail past (important if they are, say, expecting the Blue Nixie or the Hellfish back at from Sasserine sometime in the future, which is why Lavinia sent them there...)

So if they make the Perform Check and he's indifferent, DC 15 to get to Friendly (pretty much guaranteed if they hand over the loot) and DC 30 for Helpful.