Here is the full list of all 5 com__et achievements.
Reach The End! This is basically inevitable, You can't help but end up here... can You?
Reach one dead end, at least You tried...
Maybe You've seen that familiar face in shadow, but now You can see Not You for real.
You're persistent, ferreting out all the other ways this could go. There has to be a good one, surely?
Find Your way to the True Ending, the one You really want.