Hello,
i'm lvl 78 now, got the glaring difficult, many tomes, fragments and 91 fields explored. all stages were easy, but now i got stuck again.
it's going very well until wave 50 - my gems (most time g7 or g8) will stop hurting enemys and my mana pool goes down very fast.
i think i need bigger gems (500dmg vs. 30k monster life), but i don't know how to get them.