**This achievement is MISSABLE**
The final puzzle in the game gives you a word in Elvish, which will unlock the exit.
The word translates to
.
NOTE:
There is no way of finding the answer in-game, you will need to know elvish or look up the word online in order to find the meaning.
By entering
as your answer, this achievement will unlock, but otherwise nothing new will happen. The exit will still unlock.