Here is the full list of all 11 Jack N' Jill DX achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Find Jack or Jill
Die once while trying to find Jack or Jill
Complete a level
Complete a world
Unlock a minigame
Play a minigame
Get a shop ticket
Buy something in the store
Get a coin
Get 250 coins
Bounce by squashing an enemy