I beat Let It Die without paypigging and I can hardly remember a second thing about it, I guess I'm going to get early-onset alzheimers or some shit. Vague memories of the shuriken boomerang fan thingies being really busted but I can't recall if they were only busted for raids or whatever.
I DO remember always 'drawing' a dick in the other guy's vault room on the map after clearing out his base, got pretty good at that. The drop kick was fun too if impractical.