Ok, I figured out the Nell's Hanging Storm nigger build
>scan to mark enemies
>you build your stacks before before blowing your load(ultimate)
>you also debuff stormnigger by shooting him before using 4th skill
I still can't do hard mode but I can solo easy mode and just made enough tickets to buy the skin for Hailey and Serena, the only ones with different bodies so the only ones worth buying it for.
maybe this will help a fellow retard out