Basically the completetion of Still Life 1's story with a sub-par Saw style story attached.
It seems more that the game was soley made just to complete the story of the first game, which is done through 3 or 4 flashbacks during the game (none of which will take much time to complete). The other 80-90% of the game has it's own entirely seperate storyline, which is quite poor in comparison to the first game (basically a sort of Saw ripoff).
Also a little more effort could have been put into the making of the game. On several occasion when playing as Vic she will say a common line, something like "I can't use it on that" but the voice you hear will be that of Paloma.
And who's idea was it to put so many timer situations into the game. They were greatly overused at somewhere between 5 and 10 timer situation during the game. It seems quite fitting to the situation in the game but just becomes more of an annoyance, especially towards the end of the game in which you are practically going from one timer even to another.