The protagonist can't change his senior career. The first job-hopping prop is to save Maria, which seems to be 1 1 or 12. The mercenary changed his job and became a brave soldier. Take it from the brave above the castle, and ask your mercenaries to reach at least 10. Suggest changing to level 20. Personally recommend Xiao Jiuma. This guy has a very high growth rate. This is a decisive battle.
I lost him not because of my original ability, but because of my career. Archers can't jump ship. In addition to high mobility, the growth rate of the second pass is not as fast as that of Kassem. So, bury him ~ recommended occupations for customs clearance: knight, dragon knight, priest, hunter, sniper and brave. Personally, I recommend Knight Sea+a few priests, but except for the first two, the growth rate of others is not good, and I have to buy medicine piles.
Any questions?