Instructions
Tap Hermione with your stylus to begin the first quest. You will be confronted by a Fire Crab. Use your stunning spell to knock out the Fire Crab and your levitation spell on the blades of grass to collect them for your potion. Once complete, you will automatically move onto the next stage of the mission.
Collect all of the leeches in the second area. Put on your Invisibility Cloak so that you can sneak up on the leeches without scaring them away. This area is also infested with mushroom monsters, so use your best spells to keep your enemies at bay. When you have collected all of the leeches, you will be sent back to Moaning Myrtle's Bathroom.
Tap on Hermione again to obtain the second part of this quest. You will be taken to a new area where Professor Snape is patrolling the ground.
Levitate the nearby potion using your levitation spell to distract Snape. Sneak past him while he is distracted using your Invisibility Cloak to grab a key on the ground. Wait until Snape walks past the door again, sneak by with the Invisibility Cloak and open the locked door with the key. Open the treasure chest to obtain the next potion ingredient.
Cast the Incendio spell on the burner to make the vial explode. This will grab Snape's attention and make him drop the key to the second treasure chest. Exit the room and grab the key. Open the second chest, which causes Snape to come out of the room. Cast the levitation spell on the closest burner, and then cast Incendio to make it explode. This distracts Snape again, allowing you to run past in the Invisibility Cloak and exit the way you came in. You will automatically return to Moaning Myrtle's Bathroom.
Complete the potion by following the instructions on the screen and repeating the actions as show. This is the last task needed to finish this portion of the game; however, you will now be able to access Moaning Myrtle's Bathroom in Freeplay Mode.