You can do what Cheney said and just wait till you unlock Hard Mode, but if you want this achievement right away. Just play the game the way its supposed to be played by fist pumping with a controller in your hand.
Thats right, Fist Pump.... with both hands on the controller. So you can move and hold 'A' at the same time.
Go with the beat. Let the music into your body, and just start moving your hands and maybe your feet too along with the beat.... let the beat consume you.
Now you are going to have to get the otco-locks to full, whenever the circle in the middle is filled up release on a beat, remember fist pump your hands with the beat.
Keep doing this and you will hold an 8x multiplier. You might also unlock these achievements while going for Automaton
and by amazing luck if you keep the 8x multiplier the WHOLE LEVEL you might unlock
The Pulse-Pounding achievement in Child of Eden worth 132 pointsObtain more than 800,000 points in the Matrix Archive on Normal Difficulty Mode.