With the latest version of Contract Killer (version 1.3.0), a Co-op mode is introduced where the more friends you complete the missions with, the nicer rewards you'll get. This thread is for those regular players who wants a large friend list to complete the Co-Op missions with the best rewards. I'll start off first, my GC username is kuku_ciao, please add me with a message saying it's for Contract Killer. Happy sniping!
