I played the Demo on 360, id give it a 7.5/10 !
You need to stop time sometimes to get through tricky parts, slow down time to get out of harms way or sometimes reverse time to make it through a tunnel which is about to collapse.
It is also very gory, killing someone in slow-mo with a shotgun, and continuously shooting them until they hit the ground results in massive blood loss.
Pretty good game though !
