0/7 on this so far, i'm level 22 and tried on the flamethrowers for a while, but, they use a LOT of different abilities, takes up to 10 minutes to get them to use Blast Bomb, so, going back to the Too Weak mobs in Ghelsba Outpost
I know for a fact you can learn spells off Too Weak mobs, that's how I got Battle Dance and Blood Drain in the same area