Here is the full list of all 46 Disney Epic Mickey 2: The Power of Two achievements worth 1,000 gamerscore.
Finished Yen Sid's Lab
Acquired a Collectible Pin for the first time
Befriend the Blotworx and help Petetronic
Mickey revived Oswald while playing co-op
Find 88 Collectible Pins
Defeat the Blotworx Dragon
Collect every Costume
Change costumes for the first time
Enter Angel Falls, but exit Devil Falls
Collect every 2D Film Reel
Scout a path through Fort Wasteland
Chase Prescott through the Floatyard
Solve OsTown's Thinner problem
Rescue all the gremlins
Reprogram a Beetleworx
Head through Ventureland's construction area
Match Seth's flowers to OsTown's statue
Build both statues in OsTown
Destroy 50 enemies
Ignore Daisy AND Smee's suggestions
Collect 176 Collectible Pins
Reveal every knothole surprise
Shutter all four train stations
Finish Dark Beauty Castle with two players
Finish all quests
Get all three of Metairie's pictures
Befriend 100 enemies
Restart the Rainbow Falls Substation
Complete a race in Autotopia
Befriend 50 enemies
Photograph every enemy
Go through Blot Alley by any means
Deal with all the Guardian Siphons
Get all Adelle's photos from the official Picture Spots
Awaken every Spirit
Defeat Prescott's mechanical creation
Destroy 100 enemies
Open the way to Blot Alley
Brave Disney Gulch
Deal with all 3 dioramas
Play through every D.E.C.
Navigate both halves of Mean Street
Awaken a Spirit
Paint every star and comet in Yen Sid's Lab
Defeat the Mad Doctor's new ride
Find a way through the Rainbow Caverns