The only way to travel on lava Achievement in Bluey: The Videogame

The Ground is Lava minigame unlocks as part of the story, during the second episode.

To win this minigame, you just need to finish it with at least one star collected. This minigame can be annoying only because if you touch the ground, you sometimes get stuck in a neverending jump animation for some time, until you can force yourself out. Thankfully, you just need one star to count as a win, but if you get all three the game ends right then, making it much quicker.