This is a good game, but not a great one.
However, the main drawback with this title is the repetitive missions you're asked to complete. Once you have gone through the first couple of cities and completed your first few assassinations, it all begins to feel slightly tedious.
The battle system suffers the same drawback. The ability to perform small combos and one-hit counters are fun for a while and look awesome when executed, but as the game progresses, the battles tend to involve more people and the one-hit counter approach quickly becomes the only way to fight if you intend to survive, making each battle feel the same.
Fighting aside, the other aspects of the gameplay are really good. The climbing, running and jumping mechanisms within the game run very smoothly and feel rewarding to perform. Without delving into it, the story element within the game seems quite deep, especially when looking at clues as to how the sequel will start. It's just a shame the ending became a little confused - it even required an article in a magazine to answer many of the questions raised by fans who'd completed it!
Another little problem is that Assassin's offers little in the way of re-playability as well. I mean, sure you can go through all the cities again searching each nook and cranny for every last flag/Templar, but for what in return? Nothing! However, this is a small blemish and can be forgiven.
Assassin's is by no means a must own game, but it's certainly worth a try to those who enjoy the Action-adventure genre.