Massacre Arroyo?

[VasikkA]

Sometimes that can be frustrating, when you're expecting a reward but you find out there is yet more work to do. Some quests are like that, yet more running.

Plot twists are good, only if they are logical, interesting and fit to the game. The player should be drifted into a bigger plot and then free himself and/or solve the mystery, not by forcing the player to accomplish something that doesn't really affect the player in any way.