I've just completed it, what a truly great game it is!
My overall playtime was probably between 15-20 hours, I can't check because the clock is bugged but it was most certainly longer than 12 hours which is probably the average, I spent a good bit of time just flying around and collecting gems.
I had pretty high expectations (love Toyama's stuff) but Gravity Rush, for me, is his most accomplished game so far, if more GR means less Siren, then I'm ok with that!
For anyone still on the fence, I'll list a few of the pros and cons I came across:
+ Lovely story, there are a lot of loose ends, where the games just gives you enough to speculate but also keeps you guessing, the ending heavily implies a sequel is planned. These are my favourite kind of stories, where a lot of it is left to your own imagination rather than having an exposition dump
+ Charming, likeable characters. I don't think there's a single character I disliked! This is a big deal for me
+ Amazing visuals - technically it's the best looking handheld title I've ever played
+ Carrying on from the last point, the art style is awesome, entirely consistent - down to the maps, the menus, the comic book style cutscenes, the quirky voice acting - it's all ace
+ Dat music
+ When it hits it stride, the gameplay is really very fun, launching yourself around and homing in on enemies while being suspended upside down above a skyscraper, sogood
+ Sweet boss battles
+ The gyro is used very well for subtle maneuvers
- The gryo isn't as effective for more demanding maneuvers and for navigating tight corners and whatnot - the dash move is really quite unyielding and there seems to be a steep learning curve to master it (compared to the other uses with the gyro)
- While the world is designed wonderfully, there's not much to do outside of challenges and listening to rumours. Some more gimmicks to add distraction and variety would be welcome (For instance, they could have fleshed out Kat's home and let us collect lots of little objects to put in there, or there could be some sort of Fortune Telling mini game)
- Specifically, more variety with the sidequests themselves would have been nice
- More enemy variety would be great
- The game brings in a lot of story elements and characters towards the end, and so they're not expanded upon enough - we will have to wait at least a year or so for a sequel
Most of my complaints are basically that I wanted more variety, which is something that a sequel would definitely remedy
I'm pretty confident there will be one
It's my 'Folklore' of the Vita (a total gem!)
Give me DLC pls