How many balls does the Level 543 walkthrough fire?

The run uses 24 of 26 balls and clears with 2 remaining.

Why start at the lower-left corner?

That corner supports the left roof slope, so opening it removes an entire room and part of the roof together.

Work down from the tall right edge of the surviving orange staircase, then remove the last crate.

Smash Fest! level guide

expert Target: 24 moves 6 colors

Open the house at its lower-left wall, spill the red-and-white roof, and dismantle the orange staircase with 24 shots.

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Strike the lower-left cyan column and the orange crate beside it.
Open the left wall upward until the red-and-white roof slope loses support.
Wait for the roof beams and left room to spill off the seesaw.
Break the exposed orange blocks around the central doorway.
Reduce the remaining orange staircase from its tall right edge toward the center.
Clear the loose white panel and purple cylinder after they stop rolling.
Shoot the final orange crate; leave 2 balls.

Colors in this level:

Red, White, Orange, Cyan, Purple, Blue

Breaking the red roof joint before the lower-left wall leaves an expensive intact base.
Firing at rolling purple cylinders can miss pieces that would leave the seesaw on their own.

Board notes 5 details

Layout: A house-shaped mosaic has red-and-white roof beams, cyan side columns, an orange doorway, white panels, orange crates, and purple cylinders.
Goal: Collapse the left room and roof, then reduce the surviving orange stair-step and its small white-and-purple leftovers.
Opening: Strike the lower-left cyan column and neighboring orange crate so the left roof slope loses its support.
Danger Zone: The red roof joint is a decoy; breaking it first scatters roof pieces while both cyan walls and the orange base remain.
Mechanics: A lower-left wall failure folds the house shell away and exposes an orange staircase that must be cleaned from its high edge.

How many balls does the Level 543 walkthrough fire?
The run uses 24 of 26 balls and clears with 2 remaining.
Why start at the lower-left corner?
That corner supports the left roof slope, so opening it removes an entire room and part of the roof together.
How should the orange endgame be cleared?
Work down from the tall right edge of the surviving orange staircase, then remove the last crate.