Murdered: Soul Suspect has some neat concepts, but it is not a success. A few elements of its supernatural murder mystery may hold your interest, but it ultimately feels hollow because it lacks any real challenge or entertainment in solving that mystery.
Mechanically, Far Cry 4 is an excellent shooter. It adds further polish to the open-world and action of its predecessor with even more involved and dynamic gameplay, and is loaded with rewarding side content on top of featuring a huge game world you'll spend hours exploring. The narrative isn't quite as solid, and falls through in several places with some aggravating characters and a lack of context to drive your actions.
If you've already committed yourself to all things Destiny, for better or for worse, then the "House of Wolves" expansion is much more worth its cost when compared to its predecessor. But if you haven't yet made that choice, this expansion probably won't be enough to change your mind.