Just finished Q4B on normal difficulty.
I must say the game was quite fun -- it sucks you in and then it just... just ends. I ended taking around 3 hrs 30 mins - 4 hrs to beat the game.
Anyway the game is good but it lacks a few things.
1) No Arena or other mini-games to waste time.
2) No Skill Points (or Trophies. )
3) No Challenge mode (would of worked great if they made the game REALLY hard - but let weapons max out at level XV)
4) The ending mentions "Fall 2009".... which should be Autumn 2009, or rather Spring 2009 since Autumn 2009 is March - June for us Aussies... (yeah i know its nitpicking)
The story elements really work well and its clear that Insomniac sees the Ratchet Future series as one long storyline -- unlike with the PS2 games where they were all disconnected story wise (or so i have heard)







