Obtain Weapons You Can't PurchaseAdded 15 Jan 2012, ID #16877
Once you get a Heavy Sheath, you use it to get weapons that cannot be purchased.
Equip a heavy weapon and throw it. Take the weapon you can't to keep and put it in the sheath. Then, if you play the Sequence 2 Memory involving Niccolo buying your items, the weapon that you sheathed will be in a cupboard in the hideout's weapon room.