This achievement is obtained after crafting 10 different upgrades to various equipment including armors (Hats/helmets, torso, boots, gloves) and melee weapons. Divine Magic rings cannot be upgraded. You more than likely obtain this naturally as you progress through the game and upgrade the equipment for you and your party.
To start this you will need to have at least one Talent Point in Crafting. Alternatively, you can find gauntlets that give you +1 to Crafting and can equip those to temporarily unlock the ability to craft as long as you're wearing them.
If you need materials for crafting you can always recycle old items you've acquired which is breaking them down for materials. You can also find them easily by looting crates, chests, monsters, corpses, and resources in the wild. If you have some gold to spare you can also buy materials from merchants.
Once you have the materials find a workbench and go to any piece of armor or weapon that has an open crafting slot which is indicated by a black circle. If it has a green circle that means part of that item has already been upgraded. You can recycle the existing upgrade though so don't worry about that. Now scroll through the upgrades your crafting level allows you to choose from and pick one that best suits your play style and character. Do this 10 times and the achievement is yours.
If you want to just knock this out of the way early on, you can save your game and head to a workbench and upgrade everything in your inventory including your party member's gear. If they already have a slot upgraded you can recycle it and upgrade it again until you hit 10 and pop the achievement. Then just reload your save to keep your materials for future use.