Campaign was fine, but the multiplayer is where its at.
When you hear the words Uncharted 2 you usually think of that pretty PS3 game with the fantastic campaign and that nice, but okay multiplayer. When I hear those words, I think the complete opposite.
Among Thieves campaign is explosive, action packed, thrilling and all the many words to describe a Michael Bay blockbuster, but in the bits between it's a little repetitive and boring. Not to say it's not fun and hilarious it's just it can be tedious in some spots. Sometimes I felt I was just doing the same thing over and over again. Sure, there's some new quirky and fun dialogue, but I'm shooting the same few clones. I was kind of rushing towards the end as I wasn't enjoying myself as much as other people orgasmed over it.
The multiplayer for some reason was the thing I stuck around for. I assumed it was just going to be a tacked on type of deal, but to my surprise I found it substantially more enjoyable than the campaign. The perk system is probably the best I've seen in a game. Climbable environments also changes the way multiplayer games are played completely... hyperbole be damned.
I know I'm in the minority for most of this.