on the map "Fallen" (mostly works on control) there is a spot at delta (for commandos only) there is a box in front of the control point here's is what you do: step 1: capture the point step 2: walk forward and jump on box step 3:turn to the control point trust me you'll be invisible with the red/blue cloud covering you!!!!!!!
At the 'Community' option select 'Clan' and create a clan selecting the following country for your clan to unlock the corresponding weapon. Then go to the armoury and you will now have at least 2 new weapons (you don't have to invite anyone into your clan to get the weapons).
Unlock IW-80 A2 Assault Rifle: Select U.K. As your clan.
Unlock SCFR-LW Assault Rifle: Select U.S. As your clan.
Unlock Ameli Machine Gun: Select Spain as your clan.
Unlock FAMAS G2 Assault Rifle: Select France as your clan.
Unlock GMP Submachine Gun: Select Germany as your clan.