Watch Dogs PS4 bonus weapons.
Carry out the following tasks to unlock the corresponding weapons:-
AK-74: Clear one gang hideout.
Biometric assault rifle: Successfully complete the pre-order Signature Shot DLC missions.
Chrome revolver: Successfully complete ten crime detection missions.
CyperPunk Gun: Unlocked through the "CyberPunk Single Player Pack".
Spec Ops SMG-11: Clear ten gang hideouts.
Tommy Gun: Find all QR Codes to unlock the QR Code investigation mission and
successfully complete the mission.