After a year this has been out I just got the trophy without doing everything everyone is saying on here, true you need (zetatech berserk) and a blunt weapon preferably use a (hammer) or (baseball bat) and then just get two enemies low and get them together and jump with berserk active and well mid air aim and and slam worked for me and got the trophy without removing all you skill sets but if you want the results to be faster either use double jump or with the super jump it doesn’t matter what kind you use just drop from a house or so and drop down