Open Ended Grudge
|"Take your final enemy out in each of 8 known ways."|
To obtain this achievement, the player had to get the achievements Knuckle Down, I Just Really Don't Like Gessler, Why Don't You Just Shoot Him?, Not Worth The Bullet, Seven Story Takedown, Sorry, Were You Using That?, Those Intex Models Jam and Works Both Ways.
This achievement was removed in Patch 2, because of a bug that caused it to unlock even if only one of the 8 possible takedowns was performed.