3 0 2Actions Report Solution All you have to do is keep fighting zombies using your melee weapon until you get it to level 8Showing both comments. Leave a comment. Just doing the regular campaign, I unlocked this while clearing out the infestations around the courthouse for the character that you started the game with. Doesn't take long. Maybe 2 hours of total gameplay time.Posted by Friggin Grease on 24 Oct 15 at 21:46 Took me less than a hour with Gurubani in Breakdown starting a New Game.Posted by mcnichoj on 31 Dec 15 at 23:49 Leave a comment