The first dual is learny but gets super consistent trust me. The before the first dual is free and just learn the in between the duals part and you can get there basically every ten attempts. Trust me.
No not really. But now i have two (almost three) insane demons which i have more than 40% on. Hi and 8o. (I have 39% on Acropolis technically doesn't count but come on that's pretty good)