By being on /f/ for over 5 years
Nah, its quite simple:
-Just do the first three flashing bars with good timing
-the 4th and biggest flashing bar is broken, you can click as fast as possible and get no misclicks, so I used two fingers to click as fast as possible
-tried a few times to get a good angle
-got the star (I think its the best?)
-keep clicking with two fingers for more digging
And I got 20k at my 4th try or so.