There's lots of good things about this game. I think the story and presentation are pretty cool, the atmosphere of war-torn Cybertron is overwhelming (in a good way, helps with immersion), the vocal performances are strong, music's pretty cool, and you can play as Starscream. But the gameplay itself is surprisingly dull, with levels that feel like they go on forever and bizarre difficulty spikes that do not feel balanced in the slightest. Especially you, Trypticon.
I hear Fall of Cybertron is much better, I look forward to that. Grimlock is in that one, so I'm sure I will like it.