Wow this is really really cool. It's really fun trying to plan which totem you need for a given floor. I also like that enemies respawn a totem when they cross over it, meaning you can farm health or gold for a bit if you position correctly for a given floor. Very strategic and satisfying!
I also love that you can swap heroes strategically to attack an enemy that's targeted one of your other heroes.
This is really creative, nice job!