I had the keyboard problem, but...
I used the arrow keys and the controls worked fine with those! This game is HARD...and I was playing on forgiving!
Great job on the music, level design, and overall feel.
The ramp up in difficulty is a bit steep, but it feels very rewarding when you beat a level. I'm glad you included the level selection page so that I can skip ahead if I want!
Great job on your first release!