Cabal Slot Extender

There are 4 ways how to upgrade your equipment:

1, Using Upgrade Core - it will incease level of your item up to +15
2, Using Force Core Upgrade - it will fill empty Force Slots in Equipment
3, Using Slot Extender - it will create new Force Slot in your item and it will improve bonuses gained from Force Slots
4, Crafting - if the item has no epic option yet, you can craft it (supposing you have required craft level) to add nice bonus of your choice.
In this section we will talk about first three options, because Crafting is a separate huge topic. For more information readarticles about Crafting
First of all, in this upgrading you will need to use Upgrade Core, Force Core and Slot Extender. You will notice that all these items can be: Low, Medium, High, Highest. So what are these? All Armors and Weapons (not Acessory) have their Item Class. Item Classes match distribution of Cores, they are also: Low, Medium, High, Highest. Inside Items Class are more grades of equipment, which makes the equipment more diverse. All grades of equipment within a Class can be upgraded with the same Class of Cores/Extender. For example: you need UCH for Osmium, Redosmium and SIGmetal grades if you want to upgrade your items. All the Classes and Grades are listed in this table below. In the last column is price for attempting Force Core Upgrade at Core Alchemist (using Upgrade Cores and Extenders doesn't require money - if you already have them, of course).

Low Class
Item Grade	Weapons	Armors	Force Core Upgrade Cost
Normal	N/A/Crude	N/A	0
Reinforced	Iron/Red	Reinforced	1.000
Silk	Damascus/Coraleye	Silk/Iron	2.000
Aramid	Shadowsteel/Citrine	Aramid/Shadowsteel	4.000
Medium Class
Item Grade	Weapons	Armors	Cost
Bluestin	Bluestin	Bluestin	30.000
Titanium	Titanium/Pherystin	Titanium	60.000
Shadowtitanium	Shadowtitanium/Aqua	Shadowtitanium	120.000
High Class
Item Grade	Weapons	Armors	Cost
Osmium	Osmium/Lapis	Osmium	500.000
Redosmium	Redosmium/Topaz	Mystic/Terragrace/Shineguard	1.000.000
SIGmetal	SIGmetal	SIGmetal	2.000.000
Highest Class
Item Grade	Weapons	Armors	Cost
Lycanus	Lycanus	N/A	?
DreiFrame	N/A	DreiFrame	?
Mithril	Mithril	Mithril	7.000.000

Now we can proceed with revealing secrets of upgrading your equipment.We shal start with Upgrade Core Upgrading.

Force Core Upgrading - Options Adding

You cannot do Force Core upgrade on your own - notes from legacy of darkness
Prices, % Chances 35% 21% 5% chance increase for each Force Core
Chance increase with item level. Options available for each equipment
Option Scrolls Randon/Fixed. Double price for 2 handed weapons

Adding Slot using Slot Extender.

New empty slot, bonuses in slots increased.