Fully guided musou. S-ranking all levels/all difficulties with first weapons should cover all Inga grinds. No missables, collectibles/kills save instantly. ~20 hours to 100%, slightly based on skill.
Fully guided musou. S-ranking all levels/all difficulties with first weapons should cover all Inga grinds. No missables, collectibles/kills save instantly. ~20 hours to 100%, slightly based on skill.