Uhh
Anjori likes semi open spaces. She excels in the dark and oddly lit areas as she has a huge advantage in those situations. However her attacks can be more devastating and focused in closed spaces.
Xander has no real preferences...
Rangh in general likes open spaces. While sight is required for him to use one of his key abilities.
Because of the nature of her abilities, Valencia likes closed in spaces where she can use environmental factors to her benefit.
I'm honestly too lazy to read all of the terrains
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Chrono1219