I know how that goes. The actual assassination missions of AssCreed were fine, but getting to them was a complete bore. For a bit of context before the assassinations you have to gather pieces of information about your target - which you gather in one of three(?) ways. They're not very exciting or entertaining, and you have to do it for every assassination. It gets old fast.

There's enough good in it to get you through the game, I found, but it does cut it really fine.

Play it if you must to get to AC2.