In Chapter 6 (after you obtain Magnesium Catalyst the photographer drops after successfully takes a picture of the ape), you’ll need to create potions in order to turn Mr. Hyde back into Dr. Jeckyll. In order to this, you’ll need to create potions in his main office. The recipes to create his potions are to the right of his desk. You’ll need to create the following:
Grabulation Elixir – Cold Green + Cold Red
Embiggening Potion – Cold Yellow + Hot Green + Hot Green
Cranius Shrinkation Potion – Cold Yellow + Hot Green + Hot Red + Hot Yellow
Facium Vegetabilbius Medicine – Hot Yellow + Hot Yellow + Cold Red + Cold Green
Transmogrification Remedy – Magnesium Catalyst (again, from the photographer) + Cold Red + Hot Red + Cold Yellow + Cold Yellow + Hot Green
Head downstairs (door with yellow knob). You’ll see Mr. Hide in desperate need of a remedy. DON’T GIVE HIM THE PINK POTION JUST YET. Instead, give him the Blue Potion (big hands), Purple Potion (fruit?), Yellow Potion (shrunken head) and THEN give him the Pink Potion (Transmogrification Remedy). This should unlock the achievement.
The Green Potion cannot be given. Bertram will say its “for external use only”. Still, I made the all the recipes for safety.
Thumbs up if the guide helped and feedback is always welcomed.