They need the badge for getting all of the trophies, Like in bunny invasion 2. I love these games.
P.S. I have all of the trophies, for both games... Yay ME!
This game got me mad! I got really far into it, with A LOT of the upgrades, but I couldn't find the save button, So I figured it was just an autosave. When I couldn't load my file, I was flipping.
 "Death Vegas")
 "Death vs. Monstars")
 "Sniper Assassin 3")
 "Super Karoshi")
 "SHIFT 4")
 "Sonny 2")
 "Learn to Fly")
 "Bunny Invasion: Easter Special")
 "The Epic Quiz")
 "The Great Siege"){kind=logo}
 "Tactical Assassin 2")
 "Platform Racing 2")
 "me and the key")
 "Dolphin Olympics 2")