Even though the game doesn’t use low-rez character models or backdrops, the style still invokes that old-school feel by getting the proportions of the character sizes to the rooms you are running through just right. As it is, you get that classic feel, but with detailed character sprites.
The overall visual style feels like someone’s attempt to use Southpark’s paper-cutout method, but with a dark and demented Disney character design that you might have seen in Hercules. The result is a highly stylized cast of characters, but done in a way that would almost feel right in an old Flash-based game.
The visuals seem appropriately paired to their audio. The only dialogue is between levels and it is done well, but I especially enjoyed the game’s background music. Each level had a distinct mood to it, and that mood was generated by more than just the look of each level. To call the soundtrack merely mood music seems weak, but that really seemed to be the primary purpose and it did it well. Without it, I doubt the feel of Dr. Jekyll's laboratory would have been all that far from the early levels in the docks.
