Here is the full list of all 15 Sokoban Land DX achievements.
Finish the first three levels of the game.
Finish all levels of Part 1 in Grass land (World 1).
Finish all the levels in Grass land (World 1).
Finish all levels of Part 1 in Sand land (World 2).
Finish all the levels in Sand land (World 2).
Finish all levels of Part 1 in Candy land (World 3).
Finish all the levels in Candy land (World 3).
Finish all levels of Part 1 in Patch land (World 4).
Finish all the levels in Patch land (World 4).
Finish all levels of Part 1 in Pixel land (World 5).
Finish all the levels in Pixel land (World 5).
Finish all the levels in all Worlds.
Reach 30 minutes of gameplay time.
Reach 2 hours of gameplay time.
Reach 5 hours of gameplay time.