I'm a trophy whore.... I admit. I definitely love zombies more than the campaign though...
That 75,000 points on Shi No Numa is a b***h. And if zombies could keep their heads still I could get the freaking head shots! But no, zombies have to be flailing around..n' s**t.
And other dumb ones that are just like...luck. Like the lightning gun, monkey bombs, and ray gun trophy. Just play the freaking level till you get it, I guess...