With Endless, my problem is that if I leave too, it's one more decent (or at least half-decent) person leaving the game, and from the looks of things, it'll need all it can get.

My La Pucelle challenge is just a personal one; to get the ability to purify bosses before entering the castle in Chapter 1. I've already got all three human up to level 30, captured a hanihani, and have a couple items that increase all abilities, but as I said...it takes forever.