There seems to be a problem in one Shadow Rune scenario after mixing the Labyrinth of ruin extension...
In Labyrinth of ruin, you get a couple of extra objective tokens ( 7 ), and in this scenario it says : "If all objective tokens are on the map at the same time..."
Technically, it means that it take 7 more turns to win (for this condition).
There is no way to differentiate objectives tokens from the core game from the ones in the extension.
I hope they'll add an errata for that in the FAQ.