Can anyone tell me how to manipulate the rng when getting all the figurines so that I only need to use 1 shell for each one?

Here you go! This is the one I used for learning 100% speedruns.

https://pastebin.com/LL1KMCjQ

The manipulation we have is designed for the JP version of the game, and it might only work when you're at the end of the game and have everything that we would have at that point in a 100% speedrun. RNG is a little bit weird in this game. Also, the movement into the figurine house is specific, just watch one of the 100% runs to see what you have to do (it's not very difficult)

I didn't see this thread earlier, sorry

thanks