Here is the full list of all 44 Disney Epic Mickey 2: The Power of Two achievements.
Befriended the Blotworx and helped Petetronic
Found 88 Collectible Pins
Collected every Costume
Changed costumes for the first time
Entered Angel Falls, exited Devil Falls
Collected every 2D Film Reel
Rescued all the gremlins
Reprogrammed a Beetleworx
Matched Seth's flowers to OsTown's statue
Built both statues in OsTown
Ignored Daisy AND Smee's suggestions
Collected 176 Collectible Pins
Revealed every knothole surprise
Shuttered all four train stations
Finished all quests
Got all three of Metairie's pictures
Befriended 100 enemies
Completed a race in Autotopia
Photographed every enemy
Got all Adelle's photos from the official Picture Spots
Awakened every Spirit
Destroyed 100 enemies
Awakened a Spirit
Painted every star and comet in Yen Sid's Lab
Defeated the Mad Doctor's new ride
Dealt with all the Guardian Siphons
Got through Ventureland's construction area
Defeated Prescott's mechanical creation
Chased Prescott through the Floatyard
Played through every D.E.C.
Scouted a path through Fort Wasteland
Destroyed 50 enemies
Dealt with all 3 dioramas
Got through Blot Alley by any means
Befriended 50 enemies
Opened the way to Blot Alley
Defeated the Blotworx Dragon
Braved Disney Gulch
Found a way through the Rainbow Caverns
Restarted the Rainbow Falls Substation
Solved OsTown's Thinner problem
Navigated both halves of Mean Street
Acquired a Collectible Pin for the first time
Finished Yen Sid's Lab