Thank you for your lengthy answer. And let me just say - a speedrun would be so cool :D I'm sure you'll find plenty of loopholes. Let me know if you'll upload anything to YT or alike!
Also im kinda confused there was a sword disappearing and reappearing on the bottom right of one of the levels with fog i went to it an interacted with it it did nothing expect for go down.
Also when i was collecting one of the items in the game the name it says onc i picked it up is something like /sy or /sx or something like that