For this level (and mastery) there were really only two points that make or break the run. The first wave and the direction the Geemers can jump is one, and the movement variation on the final wave. You'd ideally want to have the initial bomb hit all of the Missile Geemers to reduce the number of bombs, but depending on their movement it can prove to be rather difficult.
these all look like they were really fun to grind
For this level (and mastery) there were really only two points that make or break the run. The first wave and the direction the Geemers can jump is one, and the movement variation on the final wave. You'd ideally want to have the initial bomb hit all of the Missile Geemers to reduce the number of bombs, but depending on their movement it can prove to be rather difficult.