Here is the full list of all 56 Hardcore Maze Cube - there are Puzzle Survival Game achievements.
CONQUERED 2ND MAZE
CONQUERED 3RD MAZE
CONQUERED 04TH MAZE
CONQUERED 05TH MAZE
CONQUERED 06TH MAZE
CONQUERED 07TH MAZE
CONQUERED 08TH MAZE
CONQUERED 09TH MAZE
CONQUERED 10TH MAZE
CONQUERED 11TH MAZE
CONQUERED 12TH MAZE
CONQUERED 13TH MAZE
CONQUERED 14TH MAZE
CONQUERED 15TH MAZE
CONQUERED 16TH MAZE
CONQUER ALL MAZES ADVENTURE
CONQUERED 1ST TIME MAZE
CONQUERED 2ND TIME MAZE
CONQUERED 3RD TIME MAZE
CONQUERED 4TH TIME MAZE
CONQUERED 5TH TIME MAZE
CONQUERED 6TH TIME MAZE
CONQUERED 7TH TIME MAZE
CONQUERED 8TH TIME MAZE
CONQUERED 9TH TIME MAZE
CONQUERED 10TH TIME MAZE
CONQUERED 11TH TIME MAZE
CONQUERED 12TH TIME MAZE
CONQUERED 13TH TIME MAZE
CONQUERED 14TH TIME MAZE
CONQUERED 15TH TIME MAZE
CONQUERED 16TH TIME MAZE
CONQUER ALL MAZES TIME FOR LIFE
CONQUERED 1ST HC MAZE
CONQUERED 2ND HC MAZE
CONQUERED 3RD HC MAZE
CONQUERED 4TH HC MAZE
CONQUERED 5TH HC MAZE
CONQUERED 6TH HC MAZE
CONQUERED 7TH HC MAZE
CONQUERED 8TH HC MAZE
CONQUERED 9TH HC MAZE
CONQUERED 10TH HC MAZE
CONQUERED 11TH HC MAZE
CONQUERED 12TH HC MAZE
CONQUERED 13TH HC MAZE
CONQUERED 14TH HC MAZE
CONQUERED 15TH HC MAZE
CONQUERED 16TH HC MAZE
CONQUER ALL MAZES HARDCORE
CONQUERED 1ST - BONUS MAZE
CONQUERED 2ST - BONUS MAZE
CONQUERED 1ST NO STRESS MAZE
CONQUERED 2ST NO STRESS MAZE
CONQUERED ALL MAZES
CONQUERED 1ST MAZE