Hardsingl

From the Armageddon mod:
-The "Blocked Ore" Mechanic : to avoid speedruning the game, you'll now have to beat a Boss before breaking, using, or equipping an armor/a tool. Each boss has his Ore. For example before using the Iron you'll have to defeat the Iron Colossus !

-The "Blocked Nether" Mechanic : before entering the Nether, the player must defeat a boss (Eldorath) who will open the gate to this dimension. Before that if the player try to enter in the Nether he will be sent back to the Overworld in the sky, so be carefull !

-The new Curio "Accesory" Slot : with Armageddon you'll now have 4 new slots called "Accesory" in your Baubles inventory. That slot is used for the new accesories that come with the mod. You can't equip two same accesories in those slots ! ((in theory you can but the effects are not stackeable you'll just lose a slot!)

-The "Bosses Health Multiplayer Scaling" : the mod adds a simple mechanic that works with the 11 additional bosses. When a boss spawns, it will check the number of players around it (up to 6) and increase its life accordingly!

-The Lore Mechanic : after defeating a Boss he will drop you a Lore Scroll that you can read and is accurate to the Minecraft Lore ! Those are wrote by me so if you have some suggestions you can share them !

-The Post Ender Dragon "game" Mechanic : this mod now adds a complete walktrough after defeating the Ender Dragon also with a full Lore !

-The Hardmode: After defeating the Ender Dragon you'll enter the Hardmode that can be configured in files :p

As well:

• strengthening mobs
• new survival mechanics
• resource limitation
• the progression of difficulty

(spoiler alert !!):

-The Iron Colossus

-The Goblin Lord

-Arion, Tyrant of the Emerald Wrath

-Eldorath, the Ancient Builder

-The Elder Guardian (vanilla)

-The Elvenite Paladin

-The Wither (vanilla)

-Zoranth, the Forgotten One

-The Ender Dragon (vanilla)

-Vaedric, the Fallen Wanderer

-The Bringer of Doom

-The Calamities

-Zoranth, Newborn of the Zenith

-Nyxaris, the Veil of Oblivion

Create Obsidian Infused Bottles with 2x Glass and 1x Crying Obsidian (Crafts x3)

Hold the Obsidian Infused Bottle in your off-hand and kill any undead mob, doing so will trap the Nether Essence inside the bottle (Mobs can be added/removed in the config)

Obtain all four shard pieces from Evokers, Witches, Abandoned Mineshafts and Pillager Outposts. (Note: Each mob/structure only drops ONE variant of the shard. I.e. Evoker only drops the bottom left shard.).

Now you need the Nether Crystal, this can be found in suspicious sand or gravel.

Once you've obtain all the required items you can now craft the Seal Of The Underworld

Use the seal to be granted access to the Nether

1. The Old Eye — found in the desert pyramids

Legends say that this eye once belonged to one of the great sandworms.

2. Hell's Eye — found in hellish fortresses

He was lost by a demon in the battle between Aether and Hell

3. Ice Eye — found in an igloo

One of the last artifacts left by the ice priests before they suddenly disappeared from this world.

4. The Eye of the Robber — can be found in the pyramids in the jungle

It is believed that this eye gave our ancestors knowledge about the red stone.

5. Black Eye — can be found in buried chests

Pirates say that he gave sight to the legendary Black Pearl.

6. Magic Eye — drops out of summoners

Without this eye, the summoner has no power.

7. The lost eye — can be found in the mines

It is said that it was forged by the first blacksmiths.

8. The Corrupted Eye — can be found at marauder outposts

The greedy king's eye faded away in loneliness. Legend has it that it will bring endless wealth to its owner.

9. A withered eye — falls out of a Withered one

I witnessed the destruction. He may also have seen your belongings disappear.

10. Guardian's Eye — can be obtained by killing the senior guardian

It has seen many warriors drown in the depths of the sea.

11. Witch's Eye - Create it with a witch's pupil

 It is believed that this pupil has seen ancient potion recipes that have been lost over time.

12. The Cursed Eye — can be found in the treasure chest in the Bastions

 A powerful but destructive artifact; the Piglins vowed to protect it with their lives.

13. Exotic eye — create it from water objects

 Those who followed this eye were never seen again; rumor has it that they found the great city of Atlantis or lost their way trying to do so.

14. The Evil Eye — buy it from a master priest

 A sacred talisman that is said to protect its owner from mishaps.

15. The Eye of the Undead — create it from the soul of the undead

 Memories of the past lives of those who live in death

16. The mysterious eye is a small chance to get it when enchanted

 There is no information about this eye.