well...
it wasn't bad at all.. But I do have some remarks.
First of all: your movements were too slow. They should be more fluently. Also, because it was so slow, the action didn't get the "suspense" it actually deserved, so that was kinda a bummer.
What you could also do, but that's my opinion, is to use finer lines when drawing => that gives a more 'realistic' feeling for the caracters, and combined with "fluent motion" you'll have a kick-ass movie...
About the graphics I have nothing to say. They looked good, and holding in mind that this is your first cartoon, they were good enough I'd say! ;o)
The sound wern't that bad either, so no comment on that either..
But then the script...
As I said, everything happend too slow, and also: too few things happened. You should have introduced more characters, so you'd have more things to kill, and more amusement for us, the viewers...
Finally I only have a few details to say: "the text 'nooooow' that one flob said, was actually really unclear. I could hardly read what was written there... And also, the "replay-button" wasn't clear at all.. But that's just because I dislike those "text-button"... I like those classic "push-buttons" more...
Conclusion: you've made a good movie for your first try!
Just keep the good stuff coming!!
Greetz