Yeah that's a great note, and thank you for playing it multiple times I'm so flattered!
I originally had him move slower, and some of the rooms are tuned for this, so they feel super easy now since you can just sprint through them. I usually tune the game at my skill level, then, (figuring I'm disproportionately good from endless playtesting) I increase some of the main parameters by 2x (speed, health) for lower-skill players. I'd always prefer to to widen the group of people who could enjoy the game, even if it makes it too easy for us pros ;)
Maybe having a "difficulty setting" that just reduces speed and health could've accommodated the best of both worlds here, though.
(Also, reading about it, I think you're right that 'non-euclidean' is probably not the right word. Sure sounds smart though, hehehe)