To put it quickly, this is the greatest anime I have ever seen in the fifteen I have been watching anime.
The music. The animation. The art. The STORY. All amazing and top tier in quality. If you haven't seen this yet, then I strongly recommend you start it immediately.
The intricacies of the plot are unlike anything I have ever watched. Just when you think you know what will happen next, the story completely throws you for a loop. You will seldom guess what's going to happen next, and that is truly a blessing after you've seen ever anime trope under the sun.
Shingeki no Kyojin is a masterpiece that will set the standard for animes for years to come