HAHA! This game is so unreasonably difficult if you're not playing with a save file using your cumulative progress from previous chapters. I compared two runs, and it's genuinely appaling how quick i would straight up be unable to keep going because my characters simply lacked raw stats to actually be able to fight back and not get insta-oneshot. Do yourself a favour and play through every game and save your files to your computer. Absolutely worth it, and also kind of required to play this one at all.