I played a bit of the survival challenge and I had captured a whole bunch of heroes, I couldn't convert them fast enough as I had only one succubus. I placed three juggernauts on the wheels to convert but for some reason the succubus ignored them. When i put them back in the prison I don't know why but the heroes all started killing one another, forming little groups to team up on other inmates. At first a good amount of them fell, however, with the priestresses healing them and the prison healing them too they no longer died and just fought on forever. As soon as I removed one hero regardless of who he is they would stop and return to normal, once I put him back they would start all over again. So my conclusion is that it had something to do with the population. Has anyone had this before. I've got pictures of the fight attached. You can see the priestress healing the juggernaut getting ready to slam and some of them had been set on fire by the fire breathers.