Here is the full list of all 11 Lost in Paradise achievements.
Finish the game on Hard difficulty
Finish the game on Hard difficulty without using a single puzzle skip or hint
Finish a Tile Swap puzzle on Hard Difficulty in less than 720 seconds
Finish a Sliding Block puzzle on Hard difficulty in less than 360 seconds
Finish a Tile Rotation puzzle on Hard difficulty in less than 240 seconds
Score consecutive hits on the monster in the final battle.
Finish the game on Easy difficulty
Finish the game on Easy difficulty without using a single puzzle skip or hint.
Finish a Tile Swap puzzle on Easy Difficulty in less than 180 seconds
Finish a Sliding Block puzzle on Easy difficulty in less than 80 seconds
Finish a Tile Rotation puzzle on Easy difficulty in less than 60 seconds