It was perfect. Perfect. Every detail until the last minute atom.
Honestly I dont even know where to start as a Transformers fan. The soundtrack, writing, animations, scenes, it was a superb work of art from beginning to the end. You could feel the emotions of the different characters throughout the film through their facial expressions and their voices, the eventual action scenes were astonishingly awesome and intense, and the writing perfectly shows not just the breaking of the friendship between Orion Pax and D-16, but you could even feel their emotions (anger, shock, worry, etc). And the soundtrack too. Brian Tyler (who did soundtracks for Transformers Prime before), you nailed it again.
100/10 recommend. Dont worry about lacking knowledge behind the lore of Transformers, the film will guide you through.
Once again, it was perfect. Perfect.