put spys in the town and do the side mission to get the silenced m16,
and i dunno how to get camos

if u go on ad hoc real combat with add on unique characters have an mk22 fight u get camos some with silenced m16's

go online and either host a game or join a game and the game mode has to be real combat if
you kill some people it tells you that you have got a or some soldiers at the end of the
match