Decent idea, I had some fun with it. A couple problems though.
The game would periodically freeze on me if I continued to hold the 'left' button for a certain amount of time. It got really annoying to play after a while, and it crashed on me once. I get that it's meant to be hard, but I don't think it's meant to be buggy.
Also, not telling you how to restart is more than just a dick move, it's a momentum killer. One of the key elements to making hard games fun to play is the ability to restart/respawn quickly. That's why Hotline Miami is so popular. Concealing the ability to restart is one of the worst things you can possibly do in a game like this.