The humor made it.
You don't often see interactive live action flashes here, so it's something refreshingly unique in that aspect. The combination of the cartoon-like drawings and the live action images/videos added to the humor, I think. I like how you represented the building being on fire by only using little flame images.
The storyline is also hilariously absurd. I liked the brain in the microwave and how in the first minigame, they were being chased by a cascade of water bottles. This all made it interminably amusing.
The actual gameplay could be improved some. In the shooting scene, I think it would be better, instead of the zombies all coming out of the same exact spot within each wave, if you varied where they popped out. As it is, all you have to do is hold your cursor in the same spot and fire.
The point and click scene didn't seem logical at all. I know that this isn't a very logical plot to start with, so that's understandable, but it just felt like I was clicking everywhere until something happened. Even if it's something absurd, I recommend making it more of a puzzle instead of simply how many places you can find until the car shows up.
Overall, it's a funny game and I enjoyed it.