Master Craftsman 25G
Crafted all of the items from a single crafting tree.

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This is missable. Find all available recipes for one of the three crafting trees (Potions, Runes and Poisons and Bombs). You must then craft each item in that tree for the achievement to unlock. It is easiest to find the recipes for the Potions tree as there are only 6 required recipes. Conversely, there are 9 poison and bomb recipes and 20 rune recipes. I have listed the recipe locations for the Potion tree. This is missable as certain recipes are only available during certain Acts. Note: The recipe in the Black Emporium is not necessary for the achievement.

BLACK EMPORIUM DLC

Elixir of Purity: Not required for the achievement
ACT I

Elfroot Potion: Given to you by Lady Elegant upon venturing into the Lowtown for the first time.
Restoration Potion: You must complete the Formari Herbalist Gift Shop Quest in Act I and buy this from the shop.
ACT II

Life Ward Potion: You must complete the second Formari Herbalist Gift Shop Quest in Act II and buy this from the shop.
Mighty Offense Potion: This recipe can be found in Sundermount. From the entrance, head past the Dalish camp and take the right path at the fork up the mountain. Go through the cave and take the Mountain Graveyard Exit. When you get back outside, go to the right and you will find the recipe in a bone pile.
Rock Armor Potion: Can be found in Lowtown during the night only. Go to Gamlen's House and this can be found in a rubble pile to the left.
Elixir of Heroism: During the Demanding the Qun quest, as you are fighting your way through Hightown, you will come to an area with a lady in a green dress standing over a body dressed in purplish clothing. If you look to your right, you will see a loot-able corpse. The recipe can be found on this body. Note: This recipe requires Ambrosia which can only be obtained in Isabela's Act III companion quest if you didn't turn her over to the Arishok.