Thanks for the feedback! I'm really glad you enjoyed playing it.
The music is actually my own. I made it in Bespoke Synth by just experimenting with notes until I found something that matched the feeling of the time pressure. As for the jumping and moving forward, it could be related to how WebGL handles the Rigidbody physics, since that's what I use to control the player. I'm still experimenting to find the best approach so my 3D games with physics feel as smooth in WebGL as they do in the Unity Editor.
And thanks for the tip about the Layout section! I had no idea that's where I needed to set up the screenshots.
P.S. I played your game too, and you did a really great job. I haven't managed to finish it yet, but I'm definitely not giving up and I'll come back to it. I especially loved the retro TV presentation—it gave the game a really nice atmosphere.