Far to tedious and repetitive to recommend. The cities and actual assassinations are fun but not enough to save this.
Here goes anyways.
Good- exploring the medieval cities is extremely entertaining. Also, once you actually get to the real assassination- they are quite fun and exciting. Hard part is actually getting there. The detail is very well done too. Nothing like killing a medieval armed knight (especially when they are speaking French)
Bad- The mindless reptitive tasks are numbing. Even worse it seems you have to constantly re-start at the home base and transcend the landscape again and again on horseback over and over. The clue gathering part is horrible. A 5th grader could of done a better job. After several hours the cities tend to blend in and feel the same but Acre was the most unique.
The ugly- oh yes the game freezes and quite often. In fact during my 35 hours or so with the game I think I had about 7-8 freezes. Never heard of a game that freezes like that before. I thought my Ps-3 was broken until I read that it was very common. Even worse I heard AC-2 also freezes as much.
Overall the game is on the long side. This will probably take you a solid week to get through. The game is also on the easy side but the difficulty goes up the last 2 memories. The game is just too tedious and repetitive to like.