Respawn enemies?

[maltz]

Yep. After finishing the game twice I didn't find any re-spawn other than the quest/event related ones.

The enemy's size is fixed - they never grow. I guess this makes sure that everybody can eventually win the game.

Another interesting fact - no matter how early I tried to take Learning Lv3, I always have barely enough EXP to reach level 30 just before the end on normal and hard. So maximum lv 31 is a lie.

[Metathron]

Yeah, level 31 is impossible, it requires 1,000,000 experience, and up to level 30 you've accumulated 500,000-something experience.