Door

Doors are gimmicks that appear in Sonic Unleashed. They are large panels in doorways that serve to hinder the player's progress throughout the game Action Stages/Stages. By interacting with the environment, Sonic the Werehog can open them.

Description
The Doors bear most resemblance to rectangular overhead doors, meaning they are open by lifting them up so that they rest horizontally above the opening. The design of each door depends on which Action Stage/Stage the player is in; in Windmill Isle the Doors are made of stone with colors and design matching those of the buildings, while the Doors in Eggmanland are of metal and have colors and design matching the environment. Additionally, the Doors on the PS3/Xbox 360 version of Sonic Unleashed have a handle on their bottom for others to grab onto.

In gameplay, the Doors only appear in the game's nighttime acts. They can be found on the paths in the acts, usually as a part of a man-made structure, where they seal up a path that the player has to pass through in order to complete the act.

There are three known ways to open Doors in gameplay, though each Door can only be open in one particular way. Doors that can be open by Sonic the Werehog's brute strength requires that the player approaches the Door in question and does the following action until the door opens:

When Doors cannot be open with Sonic the Werehog's strength, Doors can also be open by pulling a nearby Lever or by defeating all enemies in the nearby vicinity. Doors that have been open cannot usually be closed again at the player's command.