Here is the full list of all 15 Neither Day nor Night achievements.
You've died for the first time.
You've discovered the first island.
You've discovered the second island.
You've discovered the third island.
You've discovered the fourth island.
Hard work pays off I conquered!
Hard work pays off II conquered!
Hard work pays off III conquered!
Hard work pays off IV conquered!
You've died 10 times.
You've died 100 times.
You've died 1000 times.
You've collected all Cards.
Dethroned!
Puzzle solved!