Saw it today. I give it a C+.
Story: a pretty good plot made utterly dull by a cast of nothing but clichéd characters and lots of clichéd dialog. And pretty predictable too. I've certainly sat through worse though; I didn't suffer through this.
Visuals: technically, yes, this is astonishing stuff, way beyond anything else we've ever seen. As I understand it, almost everything we see on screen is fake but it's often hard to believe. That jungle is real. Aesthetically though? I found the visuals garish and gaudy, damn near every thing drenched in tacky neons and pastels. Very little real beauty on display sadly.
Until the grand, spectacle-filled action sequences kicked into full gear later in the movie, I was pretty bored and underwhelmed overall. Those action sequences are a sight to behold though, and ultimately ended up saving what was shaping up to be a total dud for me. But just barely.
***GIANT MEGA SPOILER TO ANSWER LALI'S QUESTION ABOUT WHO DIES!!!***
Nearly every single named character in the movie dies except the protagonist and his love interest.