AR-50 XMAC Special (with grenade launcher) - Complete all Combat Tricks.
Chainsaw                                   - Crowd Control level 6 in hotel and marina.
Flamethrower                               - Mayhem Level 3 in nuclear power plant.
GAL 43                                     - Snatch level 3 in downtown.
Grenades at crib                           - One Hitman list complete.
Kobra pistol                               - Fuzz level 3 in projects.
Pepper spray                               - Crowd Control level 3 in hotel and marina.
Satchel Charges at crib                    - Three Hitman lists complete.
Shock paddles                              - Complete all Ambulance missions.
X2 Ultimax shotgun                         - Drug trafficking level 3 in airport.
Unlimited pistol ammo                      - Fuzz level 6 in projects.
Unlimited rifle ammo                       - Complete all Hitman lists.
Unlimited SMG ammo                         - Snatch level 6 in downtown.