In fairness, using Unity doesn't really need a "coder" per se to get started. I have never coded before in my life, never made a video game, and never worked on a development team, and I was able to implement a Necromancer from scratch in Unity. It's technically C#, but it is really just scripting. They will eventually need a lot of professional coders to, obviously, but I assume the people that are involved have at least some experience with scripting (certainly more than me) and they could start to implement and iron out classes almost immediately without a pro coder.
Unity handles the physics graphics, etc. It is really, really easy.