Reach the indicated rank to have the corresponding weapons and abilities available in the police armory.

Detective Rank 1: 5.56mm Carbine, 7.62 Auto Sniper, Flashbang, Slo-Mo Dirve x2
Detective Rank 2: .45 Special, Tactical Shotgun, 5.56mm Bullpup AR, Sledge Hammer, Precision Aim Assist
Detective Rank 3: 4.6 MM PDW, Assault Rifle, Tranquilizer, Sunt Baton, Zoom 4x
Detective Rank 4: Stun Gun, 9MM SMG, Standard Shotgun, Slo-Mo Dive