I'm planning on doing some runs soon and have found a few faster things currently to improve on the route. For Chapter 2, you can get only 2 whacka's bumps, and skip the level up block in the desert. Instead you use 1 to sell, and 1 for the boss. You use the level up block inside the ruins for bombette, and just use whacka's bump to get an extra round of hits on the boss. You can then get the level up block from the start of Chapter 2 and use that on parakarry.
Also I don't really see a need for dodge master, so you don't need 2 extra bumps to sell, so that saves like a minute if you just learn the timing of blocking without it.
For Chapter 6 you can do the lakilster fight without wasting time equipping badges by just starting with 9 hp.
That's all I really have for now but as I practice more I'll probably find other stuff.
Also I don't really see a need for dodge master, so you don't need 2 extra bumps to sell, so that saves like a minute if you just learn the timing of blocking without it.
For Chapter 6 you can do the lakilster fight without wasting time equipping badges by just starting with 9 hp.
That's all I really have for now but as I practice more I'll probably find other stuff.