@M3ndor - Not sure where I got it, but I got some kind of rat spray which my characters used before entering the cave. It made all of the rats disappear, and may have weakened him.
@nikkiman - Yea that's the final quest for Sakura, and the npc shows up outside of the adventurer guild. He's like wearing a black cloak with red lining. You might have to be in tab mode where its only your MC. If you choose the option to do the fight, be prepared, its pretty dam hard lol.
@WAW - Quest 4 is basically the rat one, where you go to the guys house and into some caves below. Quest 5 is one where you go into a sewer under the restaurant. Quest 6 i think is just going to different npcs in town for like 3 different components. Quest 7 is where you go to the lake in the upper left corner of the map, and grab seashells from the area (its super annoying and you have to spam click like at the top right corner of the map).
I myself am stuck on quest 31, which is basically a retrieval for some old man. I got the ore he wants, but got no idea what I'm supposed to do with them lol.
Another annoying quest is to find the little boy by the well all over the town. I've been using RPGMAKER MV as a reference to find where the quests lead. Sadly not all of them are easy to track, but at least it shows some location triggers. I'm still trying to figure out what allows you to make females characters naked during game play (figuring its when you get a harem end or something).
All in all I like the movie quality HCG scenes, but I'm not a huge fan of the new interface. His last game had a much better interface, and I enjoyed the branching skill system more. I'm glad he went back to less MC, and fewer side characters though. That way we get more scenes per character.