2 0 1Not sure if this is random but I noticed this enemy on Wave 21 of Wave mode in Arcade. It is a circle shaped enemy and takes a few seconds to kill but your achievement will unlock once you kill it. Dang! I finally encountered it last night, but it got away before I could kill it. You really have to focus on hitting it with everything you have.Posted by McGubbalo on 15 Nov 23 at 19:45 Leave a comment