How do you get all guns in destroy all humans 2

well as you progress through the game you acquire them, also if you do all Odd Jobs that will give you a few guns. when you do all of the arkvoodle cults that locked icon at the top right corner of the wheel or as they call it ring will be filled but i wont tell for more go on youtube.
P.S the quantum deconstructor made me sad after i got the odd jobs in Tunguska done until i was walking and pox said "I've spotted a weapon data-core near your position I'll slap t uf on your radar