So, you’ve completed your first playthrough of Mass Effect 3 in true paragon fashion. This save game editor allows you to change variables and checks placed within your Mass Effect 2 save file, which contains data from your Mass Effect save file (if you imported one). Click the '+' next to Weapons-bonus, you will see a few options change the value from 0 to 2 to get all the weapons from the Collector ship, and even the special training if you are a Biotic like me. Simply use gibbed save editor, open it up, open your save (Back it up first of course.) then go to the Skills/Upgrades tab.