"the game suceeds in the major thing a game should succeed in BEING FUN/thread?
It definitely had an immense fun factor. There isn't anything like the freerunning mechanic -- it stands purely unrivaled as an adrenaline-fueled mode of locomotion in gaming.
That said, a lot of the criticisms are relatively valid, and it really comes down to the player's individual attention span. I, for instance, loved the game, and the HUD-less playthrough was certainly a clairvoyant experience. Others, who tire of repetition and need more varied mission structure, just plain won't like it.