Here is the full list of all 11 Down the Rabbit Hole achievements.
Confront the Queen of Hearts
Find a way into the Keep of Hearts
Boss someone around as Four Half
Talk to the Imposter King in the Cheshire Cat's Forest
Go upside down in the Mirror Realm
Make the girl really big
Find your first invitation
Find 10 Invitations
Find 20 Invitations
Travel through one of the Caterpillar's mirrors
Find every invitation and confront the Queen of Hearts