Playing Dde you'll find some equips with a simbol on the left of the icon:



Item with that simbol can be upgraded at the defender's forge that you'll find at the tavern, spending coins.

Every item can have a certain number of "lvs" or better, possible upgrades, shown in the middle of the item window:


(items are lv 1 as base, so if they're /20 means you'll have 19 upgrades)

The more a player lvup an item, the more it have to spend for the next upgrade.

But how to calculate what will be the final number of the stat(s) we want to upgrade, without the risk to waste all your money?

Here we go:


So basically every stat referring to the hero, or his turret modificator can be upgraded by a 10% each time (of the base value), and so on for the weapon damage.

Following i'll paste a more expanded explanation i get from the player "Entropy" looking for a confirm (too well done to drop it :) )

引用自 Entropy：

Number of Upgrades:
It an item is 1/11, it actually only has 10 upgrades to do (1->2 ... 11->12)


Weapons:
-Physical Damage: Add 20% (rounded up to the nearest whole number) per upgrade

Example:
1,002 Physical and 8 upgrades
1,002 x 0.20 = 200.4 => 201 per upgrade
201 x 8 = 1,608 for all upgrades
1,002 + 1,608 = 2,610 initial plus upgraded damage

Final damage = 2,610


-Elemental Damage: Add 40% per upgrade (used to be 60%), rounded up as before

Example:
498 Lightning, 17 upgrades
498 x 0.4 = 199.2 => 200
17 x 200 = 3,400
498 + 3,400 = 3,898

Final Damage = 3,898


-Any Hero/Tower stat: +10% per upgrade, rounded up

Example:
191 Tower HP, 13 upgrades
199 x 0.10 = 19.1 => 20
20 x 13 = 230
199 + 230 = 429

Final Tower HP = 429


Armour:
-Any Hero/Tower stat: +10% per upgrade, rounded up
Same as weapons


-Resists (Physical, Fire, Lightning, Poison): +10% per upgrade, rounded up

Example:
760 Physical Resist, 3 upgrades
760 x 0.10 = 76 (no rounding necessary)
76 x 3 = 228
760 + 228 = 988

Final Resist: 988

Picked up from the comments below, a table to calculate the upgrades:

Table[docs.google.com]








Every help to "upgrade" ( :p ) this guide, and share the knowledge, are welcome!