Best Buds Achievement in PowerWash Simulator

Simple one this! Thankfully! After the annoying Tyresome (10G) achievement.

In order to get this, head to the top of the Helter Skelter and you'll find a gnome. Then, walk your way to the Ferris Wheel and get on, while holding the gnome (you can't jump, so just use all the stairs and the small ramp to get into a cabin. Do not put the gnome down when inside, because it can get a bit buggy, physics-wise. Once you've done a rotation it'll unlock. Congrats!