Here is a complete guide to brewing all potions available in the game and reference tips for related achievements.
Prerequisites
Potion Crafting
Related Achievements
The first one starts easy with consuming the ingredient Amanita (the red mushroom with white dots, found throughout the forest). It does 30 damage over time in 1 damage ticks.
The next achievements are typically done throughout progression of the game, when brewing potions for adventuring needs.
For these, the respective amounts of potions have to be brewed.
For the next one, the effects of the big health increase potion and the physical resistance potion have to be applied at the same time to one player. Note that the potions don’t have to be brewed for this to work.
Conclusively, the last acheivemnts demands brewing of all potions available in the game. This is only possible when the progression of the world is near end game in the final dungeon (for the last ingredients, see picture above). The boss does not have to be taken down, it is in fact better for crafting needs to farm the materials needed while it is still alive, because the mobs won’t spawn anyomore otherwise.