Ah, yes I was seeing the green arrow - I just checked again and it looks like I missed the save point right next to the codex XD - let me see if I can get further in my next session!
I have a Logitech Gamepad F310 (it's about 10 years old - I think it's overdue for an upgrade lol) - hope that helps!
And nice - I've been playing around with Raylib for a couple other projects I have in mind - I am liking some of the progress made so far! :D