Ultra Hard Coremod
Note: The name "coremod" is used ironically — this is not a real coremod
This modification opens up possibilities for players to conduct modified versions of the famous UHC (Ultra Hard Core) mode within the Minecraft environment. The mod's operation is inspired by the Gerrybrano's UHC Blox solution.
Main Functionality
The central element is a special management book through which all UHC parameters can be flexibly configured. If you discover the absence of any necessary setting — report it to the developers for addition.
Mod Support
The mod is open for functionality expansion. If you require compatibility with other modifications, simply create an appropriate request in the GitHub repository.

For version 1.12, integration with Crafttweaker is provided, allowing expansion of the following systems:
Automatic Resource Conversion
mods.ultrahardcoremod.conversion.addConversion(IItemStack input, IItemStack result , IItemStack result2 ...);
*(up to 9 resulting items)
Automatic Cooking
mods.ultrahardcoremod.autocook.addRecipe(IItemStack stack, IItemStack stack2, float experience);
mods.ultrahardcoremod.autocook.removeRecipe(IItemStack output);
Player Starting Equipment
mods.ultrahardcoremod.starting.addStartingGear(IItemStack input, IItemStack result , IItemStack result2 ...);
(includes parameters of equipment with which players begin their UHC adventure)
Twilight Forest Boss Respawn
// Coordinate format: "-1,6,100"
// Boss example: "hydra"
mods.ultrahardcoremod.twilight.boss.addBoss(String position, String boss);
Creature Characteristic Modification
// Identifier example: "minecraft:wolf"
// Entity definition example: <entity:minecraft:wolf>
// Data change example: "{Attributes:[{Name:generic.maxHealth,Base:10}],Health:10.0f}"
// (sets mob's health to 10)
mods.ultrahardcoremod.datachanger.changeData(String entityID, String dataChange);
mods.ultrahardcoremod.datachanger.changeData(IEntityDefinition entity, String dataChange);
This functionality is designed for advanced users familiar with the /entityData command.