One user level in the Map Packs, Geometry Dash High Hill, has a Hard difficulty rating. Considering its complexity, players have no trouble finishing the level and don't face any obstacles. The gameplay is somewhat reminiscent of the official Cant Let Go level as well. Despite this, Cant Let Go is harder than High Hill, even though the levels are the same in difficulty.
Gameplay of Geometry Dash High Hill
The cube appears at the start of the level in a section where you have to hop across multiple blocks before falling. The next area is when you press orbs and repeatedly tumble into platforms. After that, the background turns black, and you're in an environment that looks a lot like the Can't Let Go level where you have to keep jumping from platforms.