How do you get the kid in Run 3?

How do you get the kid in Run 3? The Child can be unlocked by beating the Low-Power Tunnel Levels, or he can be bought in the Shop for 2,000 power cells instead. The Child’s light weight, combined with his balloon, allows him to run on crumbling tiles without dislodging them.

The Child can be unlocked by beating the Low-Power Tunnel Levels, or he can be bought in the Shop for 2,000 power cells instead. The Child’s light weight, combined with his balloon, allows him to run on crumbling tiles without dislodging them.
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