Hogwarts Legacy Professor Sharpβs Assignment 2 is a side quest focused on teaching you how to use the Invisibility and Thunderbrew Potions in the latest video game developed by Avalanche Software.
It is similar to Professor Sharpβs Assignment 1, which must be completed to unlock the second task youβll receive from the Potions teacher at Hogwarts. Professor Sharpβs Assignment 2 in Hogwarts Legacy, just like the previous one, can be completed in less than 5 minutes, or it can turn into a fetch quest if you decide to brew your own Potions.
Regardless of how you wish to approach it, our Hogwarts Legacy Professor Sharpβs Assignment 2 walkthrough below covers both methods while explaining how to use the Thunderbrew and Invisibility Potions to complete the required tasks. To start Professor Sharpβs second assignment, first, youβll have to complete the first series of tasks, or Sharpβs Assignment 1.
Then, youβll have to keep an eye on your Owl Post because youβll receive another letter from Sharp.

You donβt need to progress the story because Sharpβs Assignments have the same requirement. Now make sure you read Sharpβs letter, which reads:
Complete the task Iβve given you, and then meet me in my classroom to learn Diffindo, the Severing Charm. Itβs typically used to cut an object but can be a powerful weapon when needed.
So, as you can see, besides 150XP, youβll unlock one of the 34 Hogwarts Legacy Spells by completing this new quest Sharp has for you. Now, check the quests tab in your Field Guide, and youβll notice that there are two objectives youβll need to complete:
- Acquire and use an Invisibility Potion.
- Acquire and use a Thunderbrew Potion against enemies.
Now, letβs go over these two objectives and cover them individually.
How To Acquire and Use an Invisibility Potion
The fastest and cheapest way to acquire and use an Invisibility Potion in Hogwarts Legacy is by completing A Demanding Delivery side-quest for J. Pippin because, during the said side-quest, youβll need to deliver some Invisibility Potions to Fatimah Lawang.
After you find her, sheβll ask you to drink one of them, and the first Professor Sharpβs Assignment 2 objective will also be completed. Since you receive the potions from Pippin, you wonβt have to spend a single Galleon for this first task. If you have finished A Demanding Delivery, open your Field Guide Map and select Hogsmeade.
Now, fast-travel to the small town and visit J. Pippinβs Shop marked below. You may remember it from the previous assignment.

Enter J. Pippinβs Potions shop and talk to the vendor. Make sure you buy the Invisibility Potion from his inventory for 800 Galleons. Now exit the shop, and while standing outside, equip the Potion by pressing and holding down L1/LB and selecting it from the Tools Wheel using the Right Thumbstick.
Release L1/LB after you select the Potion. Now, simply tap L1/LB to use the Invisibility Potion. The third method to complete the first task is to brew the Invisibility Potion, but for this, youβll need the following ingredients:
- Invisibility Potion Recipe β Obtained from J. Pippin for 800 Galleons
- 1 Leaping Toadstool Cap β Obtained by gathering the red mushrooms which grow everywhere
- 1 Knotgrass Sprig β Obtained by growing Knotgrass at any Potting Table or from The Magic Neep shop in Hogsmeade
- 1 Troll Bogey β Dropped by Trolls after defeating them
After you get all the necessary materials, you can brew the Potion at any Potion Station, such as the one in the Potions Classroom, and then use it following the steps above.
How To Acquire and Use a Thunderbrew Potion Against Enemies
To acquire and use a Thunderbrew Potion against enemies, first, youβll need to get your hands on a Thunderbrew Potion. Luckily, you can also buy this one from J. Pippinβs Shop, marked on the map above, for 1.000 Galleons.
If you donβt have enough money, consider selling some of the Gear you no longer use. Once you buy the Potion, equip it following the steps above. However, this time, youβll need to use the Thunderbrew Potion on enemies, so youβll have to do some exploration until you find a group of enemies. Make sure that there are at least two enemies in the said group.
While you can do this on any group you want, for the sake of our Hogwarts Legacy Professor Sharpβs Assignment 2 guide, we recommend visiting the ruins east of East Hogsmeade Valley Floo Flame.

At the location we have marked, youβll find a small camp, and the Poachers there are perfect for testing your Potion. Simply enter the camp, let at least two enemies get close to you, and then tap L1/LB while the Thunderbrew Potion is equipped. Youβll summon a storm, and to complete the task, youβll have to hit two enemies with lightning.

Similar to the previous Potion, you can be the Thunderbrew Potion if you have the following materials:
- Thunderbrew Recipe β Obtained from J. Pippin for 1200 Galleons
- 1 Leech Juice β Obtained from Leeches found around most water sources (rivers/lakes)
- 1 Shrivelfig Fruit β Obtained by growing Shrivelfig at the Potting Table or by purchasing it from The Magic Neep Shop in Hogsmeade
- 1 Stench of the Dead β Obtained by killing Inferi
Regardless of how you choose to obtain the Potion, once you have it, use it to damage two enemies. After completing the second task, itβs time to pay Sharp a visit, so open your map, navigate to Hogwarts, and select the Potions Classroom Floo Flame in The Library Annex.
After talking to Sharp, youβll get the chance to learn the Diffindo Spell by completing the associated mini-game. Simply guide your wand (blue arrow) on the pattern on the right side, and press the buttons that appear on the pattern when your wand is above them.
After you unlock Diffindo, you can also practice the new spell on the dummy in Sharpβs office, but make sure you equip it by pressing Right on your DPad. And thatβs it! You completed Hogwarts Legacy Professor Sharpβs Assignment 2, so now you should focus on the main quest named In the Shadow of the Undercroft.