How can I unlock all campus levels quickly?

Finish each level's main goal to open the next one. Defeat the boss and clear key fights along the way. Most players move forward after they beat the final enemy in each area.

What triggers health regeneration during fights?

Knocking out enemies gives you health back right away. One solid combo on a group can refill a good chunk of your bar. Keep the pressure on and you stay in the fight longer.

Are there any in-game rewards for mastering special moves?

Landing special moves can earn extra points. Some moves also open small bonuses like new attack animations. These rewards make the fights feel more rewarding over time.