Guns-

Handguns - (Start off with them)

Submachineguns - (Mission 15, there will be a space in thewall you can jump into

Shotgun - (Mission 4, the room with the Bike after u defeat the boss)

Rocketlauncher - (Mission 9, in the plane)

Don't try finding more guns, this is it.

Swords-

Rebellion - (Start off with it)

Merciless - (Mission 14, leaning on a wall, in the are with the light you must strike, and wizard looking enemies)

Vendetta - (Mission 3, laying on the bed with chains)