I guess you could try shooting both doors beforehand so you can get to the elevator without unmorping, but I dunno how you would get IS after doing that.
Major update, incorporating the improvements made for the Echoes Randomizer (such as direct .pak editing and supporting other versions), as well as a lot of fixes (like now requiring Artifact of Truth); check the readme for the list of changes. Note that the randomization itself is unchanged and it's still not guaranteed to be possible, however.
This version now randomizes Artifact of Truth by default; if you want to reuse a seed from the previous version that used the default settings, make sure you fix Truth (-e 5,19,28,63).
Thanks Miles! I also have a question about the extreme lag/slowdowns this game has when getting splashes of wet on the visor. is it possible to just remove the textures which overlay and cause slowdowns/chugging on dolphin?