Hexen Eternal Nightmare (or was formally known as HeXen The Land of the Serpent Riders) is a custom mapset mod for Hexen: Beyond Heretic. It aims to feature 5 new hubs, new monsters, new weapons, new classes, new items, modified gameplay, and additional RPG elements (Inspired by Hexen II and Strife), etc. More Hexen but in a different nature with some parallels with Hexen II and Deathkings of the Dark Citadel style difficulty. Mod is currently in W.I.P.
Had this idea laying around for a while until I dropped it due to being unsure over annoyances from monsters that uses ice attacks with the debuff. And no, I haven't found a way to make it work on monsters yet.
What do you think, anyway?