Janne pops the balls with a blowtorch
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Janne does not take any time to prepare for the task.
He initially attempts to carry the balls up one by one, but after realising how difficult that would be, he pops all of the balls with a blowtorch and carries them up.
His attempt takes 3 minutes and 51 seconds.
(Written by TRoosevelt1776 and proofread by Karl Craven)