This is the best hardcore hack of 5e there ever was. Everything my players tried to front on was in it. When I presented it, they felt the horror of their hubris, the weight of their folly - they quaked in anticipation of their fates. It's not just the difficulty. The stuff that you always wished for in a grim dark 5e hack is in it. The overhauls are near perfection. There is no other option over Grimdark for grim-dark 5e.