Nice Twist
The first weapon i actually used was the cookie factory, then i went back to see what the others did, very nice twist there. It was more of a movie than a game though but you can improve on that by jsut making it longer.
Reviews for "Gregg and War"
Far too short
Aside from the shortness it wasn't that bad.
You really need to make it longer, more objectives etc. Really this just seems to be an interactive flash trather than a game. Look at what makes age of empires good and try to incorporate similar ideas but add your own creative flare. Humour may a good option (like with the tanks).