You said the experiment "apparently not" worked, but I have to strongly disagree—I think you succeeded!
The game is genuinely fun, largely due to the tight mechanics and pacing. The overall polish—SFX, art, UI, and level design—is incredibly high. It feels very intense and exciting!
A few notes for improvement:
Since English isn't my first language, the opening text scrolled a bit too fast for me to keep up.
Unfortunately, I hit a bug in the Desktop version where I got stuck in an infinite retry loop, so I couldn't finish the game.
Despite the bug, the part I played was excellent. The 130 hours you spent definitely paid off in the game feel!