I have read people getting Lysander Z from Mission 77 on Inferno. I have done Mission 80 like more than 25 times on inferno and still no Lysander Z. I should be getting better weapons than Mission 77 since 80 is higher but still no luck. Please dont tell me to do 77. Its as annoying as ****. Is there a requirement for it or something?
It's random. Completely & totally random. I probably ran DLC 2-16 30 or 40 times before the Z finally dropped. Others get it on their first try. All I can say is just keep playing. You can get weapons up to level 93 in 77 & 95 in 80, so it is possible (Lysander Z is lvl 90).
Here's a list someone made, if you don't already have it. https://docs.google.com/file/d/0BzMFU1jQ797wRzItUFZsLTlBSzQ/edit?pli=1
Protecting the green Earth, if even for a single flower.