Thanks for the question! We won't be adding difficulty options in E5, nor are there any planned for the near future. That being said, Desolation has undergone extensive balancing, courtesy of Posty, which has hopefully removed most of the 'ass-kicking' dished up by opponents like Tristan. The most unfairly challenging battles have been nerfed. That being said, some of the easier battles have also been made more challenging. While we want Desolation to be fairly challenging, we don't want it to be absolutely gruelling.