This can easily be done on the first level of the game. It's even easier if you beat it first and come back when you can use all your skills. The only thing you need to worry about are the enemies. If you attempt this on your second run you can use your dash ability to take them out fast without worrying about taking damage. Skip as many enemies as you can and don't try to jump on their heads. You might get unlucky and miss.
Also dying and reloading doesn't work. It has to be done in one go.