This one is a bit tricky, but you'll need to do it anyway to progress through the game: When Abby escapes from the fisherman’s village, she will be blocked by a giant whirlpool. You can stop it by bumping a barrel into the hole, but be careful that you don’t get sucked in as well. To unlock the achievement, you’ll need to let three barrels get sucked in, so rinse and repeat.
here it is in action: