Harry Potter for Kinect

To unlock this achievement you need to complete all 10 Blackboard Potions. They are unlocked by progressing through the storyline. To complete each one successfully you need to add the required ingredients and do all the required actions for the ingredients and for stirring the potion. As you add each ingredient or stir the potion you need to continue until the colour matches the picture shown in the top left. Ensure that during your stirring sections you stir the correct direction.

Once you have matched the colour as close as possible you are awarded a time bonus and move on to the next ingredient. The closer you match the colour the higher time bonus you are awarded, up to 15 seconds. Complete the potion without running out of time to pass each potion.