Today, I have defeated the Elder Dragon, a fight I postponed for a while because the wiki said it's the hardest, but it was surprisingly easy compared to the Spirit World Challenger. Lv99 Reimu and Sakuya really make a huge difference in that battle due to Quicktime and Neo Fantasy Heaven.
Some questions.
1. How do I get the missing recipes, like Vivan's Excalibur and other upgrades to stage 21 items? Do I need to do the last remaining side quest, or is it something else? I assume it's not in the bonus dunegon's treasure chest, which should contain 2 accessory recipes only?
2. Any ideas or suggestion on how to do the bonus dungeon other than the few points in the wiki, and what to expect in there? Even the first map is full of the hardest, 40+k HP monsters from the rest of the dungeon, so I'm worried about running out of MP. Marisa can regen MP well, so she is good for attacking, Reimu can also regen MP so she can be the healer (being immune to all status helps, too), but what about the rest? Sakuya won't be able to regen, so she'll run out and be useless or I'll only have 1-2k normal attacks VS 40k hp monsters. Mokou and Sanae will run out of bombs so I can't count on resurrection either. Alice might help tanking with Marionette, but even that has a (fortunately low) MP cost, and she doesn't have any MP regen ability I know about. I plan to level all characters to 99 before going in there, but I'm still worried about it. I might also need Aya for going first to avoid killing myself with reflect if there are monsters that cast Reflect Wall, and she'll also run out of MP without any MP regen.
Speaking about Silver Keys, I have 2 extra copies, one for stage 1 and stage 2 but I have opened all chests. Is there any bug that duplicates keys (like getting killed after opening the chest, perhaps) ?
Another question I never got an answer for, How does Gamer Fan work, do I need it on an active party member, or commander is ok? How much does it increase the droprate, should I bother with using it in Weekend now that the drop rates are already much better?
Speaking about the final boss of the non-expansion, crazy would be what I did, I used one party only for all 3 phases. They were around lv 80 though, and I had the luxury of having the Ice Sword for Sakuya. I wish I had recorded it, but I forgot and my characters are far too high level now to be worth doing it now.
Edit : I encountered a weird bug right now. I was doing Lithos's material quest and after switching the party to Lithos+Patchy as commander, I touched an enemy, and after that random encounter, got a quest completed message and the reward. Being confused about it, I ended up touching another random encounter, which was the 10 hairballs for the quest, but I'm not sure if got the quest reward for killing them (although I did get one more material from the drops and an adamantine shard.) The funny part is, the boss enemy icon for the quest was still there after these two battles. Fighting the boss icon gave me the correct enemies (the 10 hairballs again), and got the material reward again, too. So in the end, I got 3 Lizard Tails from one quest...