These achievements/trophies will unlock once you complete the game. Note that there are two endings and which one you receive upon completion is dependent on how many morality points you earn throughout the game.
There is an additional achievement/trophy for completing the game without killing any human enemies.
Heres a table of said achievements/trophies:
|Redemption||Complete the game with the 'good' ending.|
|C'est la Vie||Complete the game with the 'bad' ending.|
|Shadow Ranger||Complete the entire game without killing any human enemies.|