The way they tried to tell the story was pretty half-baked, considering the source material. The special effects were hit or miss (a lot of the early scenes with all the monkeys that just ends up looking creepy, and the end fight with the demon king and Sun Wukong turning into giant animals).
Not that I expected much, but this film treats its female characters like trash. Nuwa--sacrificed. Ruxue--sacrificed. Guanyin--just there for a quick power-up. Princess Iron Fan--there to make babies and save her evil husband. Those palace maids collecting peaches? Just there for decoration, I guess. I haven't really gone through the source material, so I'm not sure how many other female characters the writers included/excluded, but this is pretty depressing.