OMFG YES! (How come I didn't notice this before...) The first Impossible Quiz is one of the best Flash games I ever played, and this one is even better! The great Flash art and music, but weirder (And, quite possibly, more intelligent) questions make this game pwnsome. 5/5 for sure.
Well, for your first game, I have to say, it's very well-made indeed. A nice amount of weapons (Including a sniper... Sort of) and good gameplay make this game really good. But I have some things to say... First, when the screen is full of zombies, the game starts to lag. REALLY BADLY. And that makes the Hunting Rifle's reload time even longer. Maybe it's just my comp, that's not really good... Oh well. Second, the thing that h4mb0n3 pointed out: You have to aim on their shoulders/neck to hit their heads with the Hunting Rifle. I don't know if that's supposed to be normal, or if it's a bug, but it's annoying... Finally, maybe there should be some final boss battle against a necromancer or something? That'd explain where the zombies are coming from.
I have some other things to say, but they're not really important (About the clown zombie, why the sun takes longer to appear in later levels, and why people disappear when you're searching, but they're related to the sotyline, so... Meh)