Matix1337's video: Hollow Knight Bonfire Mod - Dream Bosses

Failed Champion was a bit challenging, mainly because you can't spam him with spells, but other than that, these fights aren't really different from them in base game, they're just much longer (maybe Lost Kin fight wasn't too long). Bonfire mod is a really cool mod created by Gradow & KDT which allows you to upgrade your stats by spending geo when you're next to the bench. Enemy HP is also increased, but I don't really know how is their HP calculated. If you want to play this mod you can download it from official google drive link or by using ModInstaller Google Drive: https://drive.google.com/open?id=0B_b9PFqx_PR9Um9MeFZMV21oWGs ModInstaller: https://www.moddb.com/mods/modinstaller