Psion
Adventurer
Falkus said:There's a difference between killing somebody actively trying to kill you, and blackmailing somebody to get something you could easily get via other methods.
You could quite easily transpose the words killing and blackmail in the above and have it hold just as true. You are stacking the deck by adding conditions in one that is possible in the other as well. It may be (and some would argue, often is) possible to stop some villainous NPC without killing him, either.