Use the arrow keys to move. Once you hit the portal in the top left corner, press the space bar. Then go to the button and press the space bar. Also, the balls might teleport onto you and end the game, so keep moving. Try not to hit the wall, you will bounce, and then the right arrow takes you left and the left arrow takes you right. If you hit the wall twice you will be restored to your original controls.
Thank you to my sister Claire for encouraging me to make this game. Please report your time in the comments section!