Actually much better than the original game.
It sounds ridiculous, but it's less tedious, it's fast paced, epic, has bad jokes, futuristic, ...
All around, you can finish this 100% and not feel like a traveling monkey.
Which ... the Far Cry 3 has a tendency to make you ...
So in summary - why isn't this a standalone? It would be better, but hey, I get it. Marketing.
Either way, great stuff. And the final weapon? EPIC.
Loved it.