Kingoffrogs
I think that Krillan has a chance to win or even save what can be saved. The most important thing is that he does not allow Dr. Yue to complete his plan. The armor on Arrakis that could function (due to it being on a rocky foundation) was sabotaged by Yueh. According to Universe of Dune, if they wanted to break this shield… it was necessary that they have enough firepower to turn the continent itself into molten rock. Through it they can dictate terms of combat that greatly favor them. Specifically, if the Harkonnen fleet besieged Arrakeen... there would be no Spice Leaves. Which means that the landslide will get angry very quickly.