A note for any bean divers out there. This is the first available achievement as you need to beat the game to unlock other game modes.
However, if you rush through all the levels avoiding every enemy, and not bothering with collecting anything (you don't need to), you can get this done in a coulpe of hours. There are 14 stages, which take around 5 mins each (my longest was 15 mins, but that was because I kept failing due to low skill level), and 9 boss stages which take around 2 mins each. I personally took 2hrs 24mins
For the later stages, try to keep your speed as low as possible without stopping to avoid falling. And for the boss fights, for the most part you can stand and spam, but for the last 2 or 3 you will want to press
to parry attacks to get your damage muliplier up.
Good luck!