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