I believe that this game is a very good game, especially for a movie-turn-game which are normally a little silly. At first when i got this game i was a little nervous, i thought "this might be too childish" but it is damn impressive. The controls are easy as pie and the transformations are fluent, the game looks great too. I love the fact that most of the surroundings are damageable and even destroyable and i also love the range of scenery.
But now to the important bits, the gameplay as a whole. I really like the gameplay - it has left me very fulfilled. You can kill enemies by melee, gun or special moves. The missions are good - maybe a little repetitive but some are still very fun. The RPG side is very enjoyable - and it is nice to be able to customize where you put your Energon so that your fighting style can be complemented. The unlockables are fun too. Generally i can resolve that this game is very good for gameplay and i can say that i enjoyed the story mode a lot.
Now to the flaws. I only have a couple of squabbles with this game. 1 being the silly enemy AI sometimes. Like melee is kind of weird in this game - most of the enemies will walk at the same speed as you walk so to melee someone, it takes a lot of effort. So, you end up using your gun a lot more than anything else. The other thing is the multiplayer which in my opinion could have been better. The matches are 4 vs. 4 which are kind of small and if people leave - people can't join. So it could be like on halo 3 where it is you versus an entire other team - which is a little frustrating.
But all in all - i like this game and i think that this is an addictive game which works well with the movie. I recommend this as a buy because i believe it works really well and you don't have to be a fan of transformers to enjoy it. The only reason it isn't 5 stars is because of the fact i don't particularly enjoy the multiplayer and there are other small flaw (as mentioned). Anyway - great game.