I would quit. It planted a lot of seeds that I thought would grow into something interesting, but it never quite came together. The gameplay gets moderately more interesting as you get more powers, but never gets that good, and the story never reaches a satisfying climax. Worst, the game just kind of... ends. Really felt like the ending was just a way to get me to invest in DLC.
On the bright side, if you play all the way through you'll get to hear Porcupine Tree who are awesome. Or you could just play that on youtube.







