What are Challenge Fights in Vanguard Zero? This is a section under the menu button on the home page that lets you try out different kinds of decks of other characters. This way you’ll get to experience the different clans available and test them out on different challenges. You’ll be provided with Gems as your first-time clear reward, and you can use this for practicing.
There are numerous decks that are presented in challenge fight and you can have 18 battles of different clan variations. Challenge Fights let you experience specific clans in order for you to check if you’re interested in constructing a specific deck of your choice.
When you choose a challenge, you'll be provided with a fixed deck. You can only confirm and play, no editing can be made for the current deck that you're using to challenge with.
When clearing challenge fights, you’ll have to play them manually. This way you’ll get to practice a specific clan of your choice, and you’ll get to fight opponents of varying clans as well. If you lose, you can retry again in order for you to get the gems.
As seen on the list, you can get 20 gems for each challenge fight that you have completed. Battles in challenge fights can only provide rewards once, so you can clear the whole list in order for you to get practice.