Took me a minute to figure out, but this was great fun! The platforming feels really satisfying, and develops in challenge at a good pace as the game continues, especially with the added pressure from the red bar.
The crossfade between the relaxed and intense music works really well (even if I'm naturally a little biased towards the music!)
I encountered an issue where the game won't load on Firefox, although it worked perfectly fine in Edge so might just be specific to Firefox and derived browsers? Still, this was a great game once I got it to run :)