To obtain Varudomon in the game "Digimon Survive," you need to evolve a specific Digimon, usually starting from a lower form like Garudamon. Ensure you meet the necessary requirements, such as level, stats, or specific conditions related to the story or character interactions. You may also need to fulfill certain in-game objectives or quests to unlock Varudomon. Check the game's evolution tree for precise details on the prerequisites.