Quote Originally Posted by ljkkjlcm9 View Post
It's really only the optional bosses Proto Babil on the New Game++ that you have to have the optimal setups.
Fixed.

...because the other, elemental optional boss, can be beated without any augments at all... even solo'ed.

Also, they can both be fought on "New game+", not just "New Game++" (you only have to beat the game once, not twice to fight them).