Nightmare Creatures/YMMV
- Demonic Spiders: The Thames Monsters, which have a huge range, the "Ogre", Banshees, Gargoyles, Giant Spiders and the Hell Hounds. Dear god, the Hell Hounds....
- Nightmare Fuel / High Octane Nightmare Fuel: Very important.
- That One Boss: And it's the first one. Pretty much a hard boss for an easy level.
- Crowley too. Hope you bothered to read and memorize all those combo skills, otherwise you're sooooo much screwed....