okay got question

normaly speaking you start a dungeon with a set amount of treachery but with the campain you have to buy treachery with XP

the question is do you have to spend XP to buy treachery every round or do you buy it once and then use it evry dungeon your party explores

second question is can you stil use the dark glyphs with the campain?

You buy Treachery once, after then you may use it in every following Dungeon.

You can use Dark Glyphs in RTL but if you take a Glyphe in your OL Deck you might use it in only 1 Dungeon level.

Darkflame said:

You start RtL with 0 treachery all around. When you buy one, you get to use it over and over. Each encounter/dungeon you can spend it to buy cards etc. It is not 'used up' after one use.

And yes dark glyphs can still be bought.