Was looking through the game .var files and decided to snoop in the CampDiff file. It doesn't have any markers though, and just has numbers for the most part.

//íà÷àëüíûé ÈÈ, ôèíàëüíûé ÈÈ, øàã äëÿ ïîâûøåíèÿ, ëèìèò õîäîâ
Novice: 0, 2, 12, 90
Skilled: 0, 3, 10, 80
Advanced: 1, 3, 10, 75
Expert: 1, 4, 9, 70
Master: 1, 4, 8, 65
Grandmaster: 1, 4, 7, 60
Overlord: 1, 4, 6, 55

Obviously, the final number is the turn limit on the Astral, but what about the rest of them? Anyone got any ideas?

Neat, thanks.