If you don't know how this works, you go through the list until you find a minifigure you don't own (they get rarer as you go) and see how far you get!
Tell me how far you got in the comments (don't worry if you don't get very far, a lot of the minifigures are quite old).
3...
2...
1...
Go!...
.1
B1 Battle Droid
.2
501st Legion Clone Trooper
3.
Anakin Skywalker
4.
Asajj Ventress
5.
Pre Vizsla
6.
Shadow ARF Trooper
If you got here, wow...
...just wow!!!!