Unlockable Weapons Xbox 360, PS3, PC

Annihilator RPG - Successfully complete Mayhem, Level 6 in Nuclear Power Plant. 
AR-50 XMAC Special (with grenade launcher) - Successfully complete all Combat Tricks. 
Chainsaw - Successfully complete Crowd Control, Level 6 in Hotel and Marina. 
Flamethrower - Successfully complete Mayhem, Level 3 in Nuclear Power Plant. 
GAL 43 - Successfully complete Snatch, Level 3 in Downtown. 
Grenades at crib - Successfully complete one Hitman list. 
Kobra pistol - Successfully complete Fuzz, Level 3 in Projects. 
Minigun - Successfully complete Brotherhood, Mission 10. 
Pepper spray - Successfully complete Crowd Control, Level 3 in Hotel and Marina. 
Pimpcane - Successfully complete Epilogue, Mission 2. 
Satchel Charges at crib - Successfully complete three Hitman lists. 
Shock paddles - Successfully complete all Ambulance missions. 
X2 Ultimax shotgun - Successfully complete Drug Trafficking, Level 3 in Airport. 
Infinite pistol ammo - Successfully complete Fuzz, Level 6 in Projects. 
Infinite rifle ammo - Successfully complete all Hitman lists. 
Infinite shotgun ammo - Successfully complete Drug Trafficking, Level 6 in Airport. 
Infinite SMG ammo - Successfully complete S