>>530367336
There's a couple of "hard" spots if you play carelessly.

>the boss fight like >>530368908 said
>the beginning of Noire's solo route
>Senmuu Labyrinth
>most Giant Battles since depending on character spacing you have to waste a turn or two to heal

Like most Neptunia games, you can grind your problems away, but VII is one of the rare games where you do not auto-replenish everything after a Level Up, which can make grinding more annoying in the early game.