Greedo diorama

I just recently unlocked almost all of the diorama. To unlock greedo in the diorama you have to use all star cards and get kills with every weapon from the outer rim dlc we only have a total of four new weapons three star cards and if you count the disruptor it makes 8 things to use it says I have 7/9 I would love to know what the nineth weapon is or what's going on