The first one had far too much busywork (not Ubisoft levels, but close), the bane of just about every open world video game (GTA is a rare exception). Of course busywork is conflated with "value" by many gamers since it pads out a 6-10 story to 25+ hours. Apparently many folks love spending hour upon hour upon hour collecting useless items scattered on the map for XP (which you might even need to defeat the the game) or unlock some achievement or weapon. I don't.
It was a good game but it was rather repetitive.
Most open world games tend to be like that.
If you are making a game that is 85% similar combat you have to make it extremely good. I think the only game that for me worked was Prototype 1, since you had so many combat styles to choose from.