Instructions
Get a running start, by holding down the directional arrow key while simultaneously holding down the "1 key" or the "dash" button. Since this game's action moves from left to right, hold down the right side of the arrow key.
Take your finger off the "dash" or "1 key" button for about 2 seconds, before you are about to run into the turtle. Then press the "2 key" or "jump" button, to jump on the turtle.
Use the "dash" button or the right arrow button to move the turtle shell, to kill other turtles or koopa troopas once the first turtle has been killed. You can also opt to jump over the shell and move on in the game.