How many shots does the Level 542 clear use?

It fires 21 of the starting 30 balls and finishes with 9 remaining.

Which side of the fortress should fall first?

Open the right side so the dark-blue upper box pitches clockwise and exposes the lower columns.

Finish the small brown crate cluster, then the isolated cyan block on the seesaw.

Smash Fest! level guide

expert Target: 21 moves 5 colors

Drop the dark-blue upper box by removing its right support, then clear the cyan columns and brown endgame crates in 21 shots.

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Break the far-right cyan column and adjacent red spotted blocks.
Remove the right support directly below the dark-blue upper box.
Pause while the box pitches clockwise and spills its purple and blue pieces.
Clear the newly exposed cyan pillars from right to left.
Hit the red spotted base pieces and wait for loose purple cylinders to roll away.
Break the small brown crate cluster lying near the center of the seesaw.
Shoot the final isolated cyan block; leave 9 balls.

Colors in this level:

Cyan, Blue, Red, Purple, Brown

Attacking the upper shell before its right support breaks leaves the heavy box balanced in place.
Chasing purple pieces during the fall wastes balls on objects already rolling off the platform.

Board notes 5 details

Layout: A two-story cyan, blue, red, and purple fortress packs tall lower columns beneath a dark-blue upper box filled with purple pieces and brown crates.
Goal: Pitch the upper box clockwise, expose the lower columns, and remove the final brown crates and isolated cyan block.
Opening: Break the outer-right cyan and red columns directly beneath the upper box so its heavy right edge can drop.
Danger Zone: Shots into the dark-blue roof only chip the shell while its right support still holds the box above the lower story.
Mechanics: A supported upper container must be tipped clockwise before its contents and the columned lower fortress become efficient targets.

How many shots does the Level 542 clear use?
It fires 21 of the starting 30 balls and finishes with 9 remaining.
Which side of the fortress should fall first?
Open the right side so the dark-blue upper box pitches clockwise and exposes the lower columns.
What are the final cleanup targets?
Finish the small brown crate cluster, then the isolated cyan block on the seesaw.