What are the challenges
Dune! Guide
Challenges are a new update to Dune that require you to complete a course to clear each one. They can be accessed by tapping the trophy icon at the top from the start screen.
The courses vary in difficulty and length but are generally short with a task to perform before you reach the end. The first challenge simply asks you to make at least one smooth landing before reaching the finish.
There are 140 challenges in total, broken down into 4 sections of 35. Each set of 35 challenges are the same but .. different.
Set 1 is normal direction.
Set 2 is reversed. The ball travels right to left and even the text on the screen is reversed.
Set 3 is the normal direction but the screen is upside down.
Set 4 is upside down and reversed.
The use of a mirror may help you keep your sanity for some of these.
For help completing the challenges check out these videos: