Thank you! These are always useful. Good idea on making the sound effects only partially positional. That might make the "left earphone" problem a bit less extreme. The Audio Listener is on the player, so most sounds comes out panned to some extent.
Somehow, I guess encountering the Bloodthirsty Slime before showing Kat the first data chip caused a sequence break in her dialogue, because she's supposed to run off to the second scene and then tell you that the demo is over once you find her again. So that must have caused some confusion. But you were able to stumble through most of it. The only thing you missed was one platforming challenge in the second scene (you can get more meat from the tanuki).