Well, I agree and disagree with your review here.
I played Creed twice, once on 360, once on Computer. Truth be told, there's little difference in the two, other than the controls on the later are more frustrating, but the "investigation" missions in the former are more tedious. Well, no, that's a lie. The "extra missions" in the PC version aren't much better. Yes, they add more stealth-based challenges (Kill x archers without being seen or alerting guards), but it remains repetitive and bland.
In short, I agree, the gameplay was horrid and so damned blase that I'd rather be playing RuneScape than it at some times, just out of sheer boredom (RuneScape level grinding is what I'm referring to, folks).
However, I enjoyed the story. Yes, you have the action-breaking scenes with talking to the deceased, but it was at least interesting to hear the story, especially using the Glitches that made them appear alive again, blemish free. True, it was a little action breaking, but give it to them that the writing of the scenes was interesting.
The combat I'd argue. It truly depends on which enemy you're facing that the counter will either work flawlessly or being as finicky as a high-born princess who liked nothing but a single kind of roast bird that was neigh impossible to find. For me, I found myself cursing the timing because it was off by a mere millisecond. This especially came in during the last altercation with [LAWLspoiler]. Truth be told, I found Altair kicking enemies harmlessly away rather than doing a lethal counter, also, which would only further my frustrations.
I personally think that the game's worth buying for the uniqueness, albeit I do agree that it's horrible in terms of how you attain progress. But I suppose that's something we will have to see if they fix come Creed 2, but I somehow doubt they will, considering Prototype was very much akin to this sort of playstyle.
As for your review, I think others have already pointed out anything I'd say would need work. However, sometimes it's good to ramble a bit, heck, throw in a few anecdotes of your gameplay to emphasize your points! Otherwise, keep up the good work, sir, and I wish you happy gaming.