It was above average for me (7/10)
Negatives:
The city/game world was very samey and uninspiring.
Side missions were shallow, repetitive, glorified time trials.
Some missions where fun and awesome, but others were repetitive tasks within the mission (e.g. go to checkpoint A and destroy tanks/helicopters/water tower, go to checkpoint B and tanks/helicopters/water tower, go to checkpoint C and destroy tanks/helicopters/water tower).
It looks like Alex is wearing hoodie over a shirt with popped collar. WTF!?
On the whole the experience was somewhat enjoyable, yet shallow, and I felt unsatisfied when I finished it. I wouldn't give it a second play through.