So I'm towards the beginning of the game, I'm on hard mode and trying to play the game without killing anybody so i can get the best ending. My question is when granny asks you to poison the gangs elixir can i still get the good ending if i do that. It doesn't exactly sound like a good guy thing to do, but the gang from what i can tell doesn't seem to be good guys either so I'm really stuck. I have made it this far without killing a single guard, i don't want that to go to waste because i did or didn't do a particular side mission.
I've looked for this info on forums but can't really find a good answers. If you know and could inform me on that id really appreciate it.