(Missable Achievement!)
You Can Also Get: Survival Of The Fittest (Assuming you haven't completed this level yet)
Boss: Kraven
Difficulty: Easy
(If you are having trouble watch this walkthrough):
(Credit to packattack04082)
(I found no specific walkthrough for this achievement, so the walkthrough video is the same as the 'Survival Of The Fittest' Achievements walkthrough).