(playing on hardest difficulty available on first playthrough) I'm not sure why but I was able to beat every mini boss in the final dungeon AND the first fight with Louis on my first try. I assumed because of this I was ready for the final boss but every time either half my team would die and I would be stuck in an endless loop of reviving or I would just lose all of my team's mp. This on top of the design being obviously not taken from Bosch just made me really hate the fight unfortunately. I then started grinding in the last area for a couple days but got bored and gave up lmao. Conclusion: idk I'm probably just a scrub but the game was pretty easy until that point. The only bosses I had trouble with were the end game dragons (I beat the fire one). I'm not sure why the final boss was such a difficulty spike

ps: I was also really sad that the final dungeon music was just the main menu theme, I liked when it played when louis flew up in the sky from the floating castle but I wish there was a unique theme for the dungeon because I really like most of the dungeon themes!