Just want some clarification on what is necessary before I start routing this category.
- Is collection required? 1a. Is collection required before end of game (besides Grandiose Diorama)? 1b. How would the "Medal of Completion" work (unsure if you can get it before credits)? 1b. How would this be verified in either case of 1a?
- Why are minigames required to be complete before end of game? 2a. When would this be verified?
- Are the Layton Challenges required (Puzzles 136-150)? 3a. When would time end for this category? 3b. Since there is no way to skip the credits/epilogue cutscene, will time be running all through credits/cutscene until the challenges begin?
Well, I haven't played Miracle Mask so far, so I don't know about all the details of the game. But the idea of the 100% category is, that every riddle, mini game and collectible (except for hint coins), which can be solved/acquired in one playthrough before the loss of control (the moment at which the run ends and is timed), have to be solved/acquired. So, if the other things, which you asked about, like Layton Challenges, are only available after the credits and after entering the game a second time, then they are not required for the 100% category, in my opinion.
The Medal of Completion can be gotten before the loss of control, but one part of the collection, Grandiose Diorama, cannot. It only appears during the epilogue, but there is no way to get to it without finishing the game. Completing the collection doesn't do anything at all, so completing the collection would be everything except the final piece. Layton Challenges aren't part of the main game, they are in the bonuses and are unlocked after completing the 3 mini-games (Toy Robot, Shopkeeping, Bunny Show) during the game, and can only be accessed from the main menu before loading the save file of a game which has the mini-games completed to such a degree. If 100% is in-game content, then the Layton Challenges and the Grandiose Diorama probably shouldn't count. Since it's just me and wiiarctus playing this game, I'd like his opinion as well.