One of, if not the most difficult bosses in the PC, PS4, PS5, Nintendo Switch and Xbox One title Mortal Shell is Hadern. Yes, Hadern. His four boss fights to unlock each of the standard weapons are easy, but his final form, with the Axetana as part of the Virtuous Cycle DLC, is an absolute nightmare unless you have a specific build with Eredrim and the Smoldering Mace. The trick is that you need to have Eredrim’s special skill to stack damage on kills, you’ll need about 20 roasted rats (or mushrooms, either one is fine), at least 5 boiled frogs, and preferably the Damaging Kick skill.