The Unity Badge (共闘の証 Kyoutou no Akashi, lit. "Unity Proof") is a special reward found in Kingdom Hearts 358/2 Days that allows a player to open a particular Mission in Mission Mode. Beginning in Mission 16, they must be found in the world in order for that Mission to open. A Unity Badge will show in a world as a small red badge with a silver ridge and decor.
Some earlier Missions can be played in Mission Mode, but a Unity Badge is not required to open them; they are considered open once the player completes the mission.
In addition, some Unity Badges cannot be gained on a player's first run-through, as they may require special abilities like High Jump or Glide to acquire.
 Unity Badge Locations
- Mission 16 - Agrabah Gate, southeast sand pile.
- Mission 17 - Station Plaza, north steps.
- Mission 18 - Agrabah Gate, Southwest building top.
- Mission 19 - The Palace, Nothwest building top
- Mission 20 - Tram Common, East central building top.
- Mission 21 - Entrance Hall, high southern ledge.
- Mission 22 - Entrance Hall, Northeast Corner.
- Mission 24 - Abyss, North exit.
- Mission 25 - Tram Common, Just east of the bridge to the west central building top (jump off the bridge to get it).
- Mission 26 - Agrabah Gate, window ledge on north wall.
- Mission 28 - The East Wing, East end.
- Mission 29 - The West Wing, North end.
- Mission 30 - The Palace, High northwest building top (Requires Glide)
- Mission 31 - The West Hall, Southeast end by the north wall.
- Mission 32 - Sandswept Ruins, Northeast corner.
- Mission 33 - North exit.
- Mission 34 - Sandswept Ruins, North side.
- Mission 35 - The West Wing, Northwest corner high in the air (Requires Glide).
- Mission 37 - Sandlot, Northwest corner.
- Mission 39 - Coliseum Vestibule, West side in the air.
- Mission 40 - Coliseum Vestibule, Northwest corner.
- Mission 41 - The Coliseum, West side on the ground.
- Mission 42 - Graveyard, High in the air near the south exit (use Air Slide).
- Mission 43 - Entrance Hall, Northwest corner.
- Mission 44 - Under the Tracks (The Usual Spot), Southwest corner.
- Mission 45 - Graveyard, East side in the air (Requires Glide).
- Mission 46 - Outside the Coliseum, Southwest corner.
- Mission 47 - Bizarre Room, Chair in the southwest corner.
- Mission 48 - Entrance Hall, North exit (inaccessible the first visit).
- Mission 49 - Ballroom, East end of the balcony.
- Mission 50 - Courtyard, Northwest corner.
- Mission 51 - Bizarre Room, Central tabletop.
- Mission 52 - Halloween Town Square, South side in the air.
- Mission 53 - Island area, West side of the main island on the bottom level.
- Mission 54 - Halloween Town Entrance, East end.
- Mission 55 - Queen's Castle, North hedge top (west end).
- Mission 56 - Station Heights, North.
- Mission 57 - White Rose Hege Maze, West.
- Mission 58 - West Island, West on the sea level.
- Mission 59 - On the West central building, near a guardian.
- Mission 60 - North, in the air between the two most-north hills.
- Mission 61 - In Coliseum Vestibule, to the east in the air.
- Mission 62 - HT Square, on the guillotine (Glide from Jack's House)
- Mission 63 - Queen's Castle, southeast, over the plant.
- Mission 64 - Main Island, South.
- Mission 65 - RRHM 2, center, between switches 2 and 3.
- Mission 66 - Moonlight Hill, to the east in the air (Glide).
- Mission 67 - Lotus Forest, north, by the north alley.
- Mission 68 - Cave of Wonders, Northwest.
- Mission 69 - Bizzarre Room, smokestack.
- Mission 70 - Ballroom, East.
- Mission 71 - On the air (Inaccessible)
- Mission 72 - HT Square, northeast (Glidefrom Jack's house)
- Mission 73 - Coliseum Vestuble, on the pedestal to the West.
- Mission 76 - Pirate Ship Deck, South.
- Mission 77 - Captain's Cabin, Southeast.
- Mission 78 - Main Island, on the air to the East.
- Mission 79 - HT Square, near the center.
- Mission 80 - Entrance Hall, West.
- Mission 81 - RRHM 1, Southwest, near the exit.
- Mission 82 - Sandswept Ruins, west, over a ruin.
- Mission 84 - Outside the Coliseum, Northwest in the air.
- Mission 85 - Hedge Maze Entrance, center in the air.
- Mission 86 - Northwest corner, high in the air.
- Mission 87 - HT Square, Jack's House, near the stairs.
- Mission 88 - HT Entrance, East, on the air.
- Mission 89 - Sandlot, East, on the bank.
- Mission 90 - Secret Depths, on the middle block.
- Mission 91 - Hall of Empty Melodies, North, on the air.
- Mission 92 - Bizzarre Room, Southwest, over the table.
- Mission 93 - Memory's Skycraper, on the stairs, in the air.