Is there any reason that the sprint toggle exists? I only used sprint all the time.
Your primary keys are WASD, Shift and Space. Why use enter for switching levels if Space would have done the job just fine.
Wall jumps only work on right walls for some reason.
There is a bug when I press esc for pause, and resume, then the countdown stops counting down your jumps, and the things that should be black in darkness are all clearly visible.
The switch between counting down jumps and counting down teleports could have been made more clear by changing the design of the countdown.
Also, Pressing R for quick restart would have been nice.
That said, you do have fitting sound effects, and the art works for the game. The movement is generally fine, though wall jumping needs some work, and I don't like that sprint defaults to off.
For future projects, you can also get those 8bit kind of sounds from tools like BFXR/JFXR/jsfxr. The menus look nice