I think progress as now ain't make sense, even though many player already pass floor 11 that mean they already hatch their familiar but somehow we never see them and these players also have no ability other than striking with their weapon
@Woodfolk : maybe the familiar can be hidden and most of them are useless?
And for magic, keep in mind that most of the magic is just enhance attack or defense/seeing flaws or ennemies and other subtil magic like that. Only very powerful people has flashy magic.
So maybe they know magic and we don't see it. Or maybe they know some but they got wiped so fast they didn't got to use it.