OK, so this is one of Prokofiev's three "War Sonatas" that he wrote during the time of WWII. They are No. 6, 7, and 8. I think they are as important in the history of the piano as Beethoven's Op. 109-111. There is such depth to this music, and they're a magnificent product of their time. They're also priceless personal records of reactions to the horrors of the worst war that the world has ever known. Their provenance was heightened even more by the incredible patronage from Russian pianists of the quality of Richter, Horowitz, Ashkenazy and Gilels among others.
So to begin with, anyone playing these pieces for an informed audience is doing so against the backdrop of some of the finest and most historically significant recordings ever made using a piano.
As for Sonata No. 8 itself, all three of the movements are large-scaled, complex, and more difficult to interpret than they are to play. It doesn't set any new standards for virtuosity, but it is a big test of endurance, concentration and musical understanding. So I wouldn't expect that the first time you learn the notes and play them from the beginning to the end of the piece, that it's going to sound like anything special. It will take time to grow in you and gain depth.