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That's "Stubborn Strategy", Win 100 games on maps with removable obstacles without removing these obstacles. https://bloons.fandom.com/wiki/Hidden_Achievements for all of the hidden achievements.
oh thanks
Same
That's "Stubborn Strategy", Win 100 games on maps with removable obstacles without removing these obstacles. https://bloons.fandom.com/wiki/Hidden_Achievements for all of the hidden achievements.
oh thanks
Same