For single play experience, it is good. For replayability and getting achievements, it sucks.

PROS
+ interesting premise
+ good story and writing
+ nice graphic and sound

CONS
- no character(s) voice
- many decisions have minor or no consequences
- the "gameplay" is too slow
- achievements requiring replaying the game over and over, with the slogfest speed of gameplay save scumming is the only reasonable option