This reminds me of a passion project SONY Japan Studio would have released a couple decades ago. I'm not used to platforming with mouse + keyboard so I'm impressed by how tight it feels. I always appreciate a real avant garde experience. There are only very slight immersion breakers like the lack of music fades, and it's sometimes hard to gauge jumps. Otherwise, I'd never believe this was made in a week.
Don't worry about not having a web build, I'm sure you'll get more plays soon. Keep up the great work. This game really showcases how less can be more.