The Council

I did this on Quest 3, you can just load the chapter up.

EDIT: This achievement won't unlock until you complete the quest, thank you Killersquirelz.

Start up the quest and complete getting the secret message in your room, where a cutscene says dinner is ready. Instead of going downstairs, go counter-clockwise in the hall just outside your room until you get to Elizabeth Adams room. Your character will mention that fact out loud when you are at her door, it's in east hall.

Inside her room, there is a black dresser on the left wall, that has a container with Crystals in it. You have the option to eat one, do so and you receive an ailment that you can cure with a Golden Elixir. There is also a Royal Jelly next to it you can grab. There is also a Carmelite Water in her room. If you left them alone on Quest 2, there should be a Carmelite Water on the bookshelf in your room, and a Golden Elixir on a table in the North West staircase alcove.

If you need to use some Effort Points so that you can consume a Royal Jelly, OR you need any of the consumables because you are out of stock, go downstairs now. There will be a servant next to you after the staircase cutscene. Ask him if he can get some things for you. He has 1 of each consumable. Acquiring any of these have options that consume your Effort Points.

Special Note: For the purpose of this achievement only buy what consumables you have zero of. Be careful to not use Royal Jelly to get more Effort Points to buy all the consumables, as using more than one of each type (i.e. 2+ Royal Jelly) voids the achievement. It must be only one of each consumable used to unlock.

There are four types of consumables:

Carmelite Water - your next usage of skill is free
Golden Elixir - remove all negative status
Royal Jelly - increases your effort point by 2
Devil's Thorn - reveal the vulnerability and immunity of the opponent

To use them, press the corresponding buttons above, and hold until the item is consumed.

This achievement requires you to use exactly one type of consumable each during a quest. I've replayed the quests a few times, and have so far found that only Quest 2 has alternate confrontations that give you a negative status. There may be others, but if you want this achievement quickly, you can do the following:


Alternatively:


You've now used exactly one consumable of each type during this quest. The achievement will unlock during the quest summary page. The achievement unlocks only after a quest is completed.

PS: Golden Elixir can only be used when you've a negative status, unlike the other consumables.