It took me an embarrassingly long time to realise the lights on the bottom are telling you if your press was good or bad and not telling you to press left and right. I'm not sure what it was but hitting the wrong button, a right light turning on, and a bonk sound playing wasn't enough for me. I eventually got there and finished (on easy mode) with a score of 14647. It maybe took a few too many button presses to get there but maybe it would have been faster if I had known what I was doing from the beginning.
I liked the visuals of taking over nodes by building up pressure., very satisfying.