I started my first multiplayer game with a friend a while ago, and, wanting to give us a little taste of everything the game had to offer, I turned on most of the options at intensity level 1. From further reading, it sounds like Fallen Spire intensity just controls difficulty, and at intensity level 1, it would result in a ridiculously easy game, with the full benefits of FS, but only 1/4 the exowaves.
Is there a way to change this intensity after the game has started?