Upgrading equips simply require a core and a right click, it's that simple.
Low core = anything up to aramid level Med core = anything up to titanium level High core = anything up to red osmium level Highest core = anything
Every time you succeed in upgrading, you gain +3 defense and +3 defense rate on your armor, +3 attack and +2 magic attack and +? on your attack rate on one hand sword type weapons, +6 attack and +2 magic attack on two hand sword type weapons, and +2 attack and +3 magic attack on magic weapons. The maximum + on equips is +7, and the higher you go, the shinier it gets. Also, +6 and +7 add double the stats previously listed.
+0 to +1 - Fail = nothing happens +1 to +2 - Fail = nothing happens +2 to +3 - Fail = nothing happens +3 to +4 - Fail = nothing happens +4 to +5 - Fail = -1 to +3 +5 to +6 - Fail = -1 to +4 +6 to +7 - Fail = -6 to +0 *Items can NEVER break.
So, be very very sure of your decision when you upgrade to that +7 rank, because it fails more often than not.
To upgrade an equip, simply right click the core, and then drag it onto the item you wish to upgrade, and click on it. Be aware that the stat requirements of your equip will increase when you upgrade it as well.
Slotted Equips Equips can be zero slotted, single slotted, or double slotted. These slots can be filled with different stats such as extra HP, extra defense, and extra defense rate (there are more). Single slotted items and double slotted ones have exactly the same stat, which is the same as zero slotted +2. There are also 2 different levels of upgrades, level 1 and level 2 upgrades. Level 1 upgrades can be gotten using catalysts, but level 2 upgrades are gotten using 2 force cores or more. Using 2 force cores give you a 25% chance of getting a level 2 upgrade, and these upgrades are random in nature.
Also, for catalysts, you can use equipments that are 1 level lower than them. However, they need to be slotted. That means, if you want to slot a Red Osmium item, you would need a osmium grade slotted item as catalyst.
And, the second slot actually only needs 1 force core, but the chance of upgrading is lower than when upgrading the first slot.
In order to fill slots in an equip, you must take it to the core alchemist in any of the towns.