They're around the forest of Fuyuki so I'm assuming there's a few open spaces but not much. Hilly terrain though so Assassin won't have it easy.
left it opened ended so you all can do what you want with the fight. I'll start with Saber, and Leon in the next post don't have it in me to make up a whole thing for them. I wanted to make Cu's entrance a lot better but as I said don't have it in me, and its been a week.