Void Fragments are a type of mission in The First Descendant. These missions require a specific approach, with the goal being to destroy the namesake so you can earn Void Shards as a reward.
How to Destroy Void Fragments in The First Descendant
Here's how to destroy the Void Fragments in The First Descendant.
Each Void Fragment mission in The First Descendant requires you to have a Descendant of a specific attribute (element). When you open the mission overview on the map, it will tell you which type of Descendant you need, such as Electric or Fire Descendants.
Equip the correct Descendant and head to the Void Fragment. You must destroy the Void Fragment with the Descendant's abilities. There are three phases, with waves of enemies between each phase. Kill all the enemies and destroy the Fragment to earn rewards.