Secret Mission

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

Secret Missions are special levels on the PS2 and Wii versions of Sonic Unleashed. There is a total of 28 Secret Missions in this game, from which 23 of them can be unlocked by collecting Item Boxes placed behind some Item Doors in the Gaia Gates, and the other 5 are unlocked as soon as you get certain amounts of Secret Items. This is the case for the last obtainable mission (Secret Mission 25) - "Reach the goal unscathed!" Day Stage in Adabat - that 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 missions that require certain numbers of items to be ilunlocked, although research on how many exactly has yet to be done.

List of Secret Missions

(Information about which stages are unlocked by which keys is also still uncovered at this point)

	Secret Mission 1 <location and level>
	Secret Mission 2 <location and level>
	Secret Mission 3 <location and level>
	Secret Mission 4 <location and level>
	Secret Mission 5 <location and level>
	Secret Mission 6 <location and level>
	Secret Mission 7 <location and level>
	Secret Mission 8 <location and level>
	Secret Mission 9 <location and level>
	Secret Mission 10 <location and level>
	Secret Mission 11 <location and level>
	Secret Mission 12 <location and level>
	Secret Mission 13 <location and level>
	Secret Mission 14 <location and level>
	Secret Mission 15 <location and level>
	Secret Mission 16 <location and level>
	Secret Mission 17 <location and level>
	Secret Mission 18 <location and level>
	Secret Mission 19 <location and level>
	Secret Mission 20 <location and level>
	Secret Mission 21 <location and level>
	Secret Mission 22 <location and level>
	Secret Mission 23 <location and level>
	Secret Mission 24 <location and level>
	Secret Mission 25 <location and level>
	Secret Mission 26 <location and level>
	Secret Mission 27 <location and level>
	Secret Mission 28 <location and level>
	Secret Mission 29 <location and level>
	Secret Mission 30 <location and level>
	Secret Mission 31 <location and level>
	Secret Mission 32 <location and level>
	Secret Mission 33 <location and level>
	Secret Mission 34 <location and level>
	Secret Mission 35 <location and level>
	Secret Mission 36 <location and level>