There exists a wide variation of enchants, such as grade-up, rank-up and so on. However, the easiest to apply, but at the same time the most vicious, are absolute damage and defense effects. Absolute damage means that damage will be given always and absolute defense means that the defense will be maintained at all times. For instance, if someone attacks someone with the absolute damage option, the defender will receive damage of the absolute damage value, regardless of their defense value. The absolute defense gives the opposite effect of reducing damage.

In a way, these options are like an all penetrating spear and all blocking shield. If you look at the image, the additional attack power (absolute damage) is 347, while additional defense (absolute defense) is at 1. The attack power overwhelms defense. Therefore, there can be an addition of something called race defense.
to increase absolutely statstics. The ranks can be upgraded through rank-up, of which there are 255 ranks.

To Rank Upgrade you will need open Rank upgrade window on the left side of screen:



The Rank Upgrade window includes:


1 - Weapon/Armor part/Shield or Cloak item;
2 - Rank Upgrade Enchant Core;
3 - Rank Upgrade Enchant Booster;
4 - Upgrade Fees;
5 - Process Upgrade Button;
empty slots for returns items if rank-up will be failed;

1) For example, in this guide we will use weapon item:
Just drag-n-drop or use shift to put weapon item in slot #1

After, you will add Rank Upgrade Enchant Core. There are 3 types of enchant core:

Higher number => higher chance for successfully rank upgrade.

Optionally, for increasing upgrade rate you could add special Item Rank Enchant Booster:
There are also animated special indicator:


After all items are inserted, just click process button and also don't forget to check you are have enough balance:
The result of successfully upgraded item:

What difference between non-upgraded, rank +1 and rank +255 items? Just compare it the following: