I finished the Endless Arena's wave 100! I'm not sure whether there are any soulstones at 110 etc., but this is a milestone! here you can find every data about the bosses in this bonus mode, and a strategy. Watch out: the cyclop boss level (wave 80) and the levels from wave 94 are really tough! Tell me if you manage them!
Cheers, Agantacroxitell me!