The Saboteur

As stated above, you must purchase every weapon in the game. I thought it would be helpful to document the list of weapons. You also should know that some of the weapons are not available until later in the game. A few weapons become available from perks, and are noted in the list.

I purchased every weapon, including the gold perks, so I don't know if the achievement will unlock if the perk items are not purchased. I had enough money to buy the weapons when they became available by doing main and side missions and freeplay events.

Pistols:
- Kruger Pistol
- Silenced Pistol
- Raum Pistol
- .44 Pistol (Perk reward)
- Executioner Pistol (available after the game is completed)
***Achievement will unlock after you complete the final mission AND go to a shop/weapon supplier, purchase the weapon and press B button to exit.

Machine Guns:
- MP40 SMG
- MP44 MG
- Tommy Gun
- Viper SMG
- Terror MP60 (avail during and after Boiling Point)

Shotguns/Rifles:
- Double Shotgun
- Trenchgun
- Terror Shotgun (avail during and after Boiling Point)
- Hunting Rifle
- Carbine Rifle
- Steiner Rifle
- Scoped Carbine
- Scoped Steiner
- Terror Scoped Rifle (Perk reward)

Special Weapons:
- Siegfaust Mk2
- Terror Flammenwerfer (Flamethrower - avail during and after "C'est ici l'empire de la mort" mission)
- Panzershrek (Perk reward)

Ok this is a solution for those people who think the achievement has glitched on them, for some people it unlocks after the final mission for some it doesnt unlock despite having every weapon.

For me it didnt unlock despite having every weapon and finishing the story to 100% then I searched the internet as I was getting rather annoyed with it not unlocking I found out on a PS3 forum someone who had the same problem I read further down to find that he fixed the problem by simply maxing out all the ammo for every weapon....this includes all explosives as well as the 2 weapons you get via perks....basically everything ammo on the first line of the screen going down making sure everything says 150/150, 30/30, 15/15, etc then it unlocks when you back out of the dealer screen.

Also I bought the gold perk for the final rocket launcher and still got it so buying gold perks does not affect the achievement.

Hope this clears up any queries.

This popped for me after I purchased the 'Executioner Pistol' at a weapons dealer, I haven't unlocked the two perk reward guns, so they may not be needed.

This achievement gave me some problems I thought there was a glitch 'cause I buy all the weapons and ammunition of all loaded to max, but I do not sbloccava reach, to unlock it at the end of the story you have to take a gun that there is' in the ground and go to an arms dealer, you will find the gun that you have collected and selecting it and coming out of the arms dealer you will unlock 'the achievement