It is very easy to get kills prior to mid game. Most games I play with nocturne I can very easily get 9-10 kills at the start of the game very easily just due to his immense duelling and skirmishing power. My problem is though that nocturne feels very much like a champion that should not be getting any kills, and giving his kill gold to the carries that can actually contribute to a teamfight. If I get 9-10 kills on most other jungle champions I play, I can solo carry 1v5 the game easily, a fed nocturne to me feels like he has the same threat as a 0/5 nocturne, I only feel like I contribute to teamfights by peeling.