Secret Mission

This short article is in need of work. You can help Sonic Retro by adding to it.

Secret Missions are special levels that can be unlocked on the PS2 and Wii versions of Sonic Unleashed.

There is a total of 28 Secret Missions in this game:
— 23 of them can be found by collecting Item Boxes placed behind some Item Doors in the Gaia Gates;
— 5 of them can be obtained when you collect certain amounts of Secret Items.

The last obtainable mission (Secret Mission 25) - "Reach the goal unscathed!" Day Stage in Adabat - requires you to get all Secret Items (except Secret Movie 36, which you obtain in this level). Secret Missions 2, 6, 10 and 13 are the other four missions that require a certain number of items to be obtained, although research on how many exactly has yet to be done. Information about which stages are unlocked by which keys is also still uncovered at this point.

• 

  Secret Mission key from the PS2/Wii version of Sonic Unleashed

• 

  Secret Mission Item Box from the PS2/Wii version of Sonic Unleashed