This is my favorite game since Ocarina of Time and maybe of all time, it's just so intense the entire game, beautiful art style to boot.
With a good multiplayer (haven't got into it much, but the beta was fun) the co-op is good, the single player is mind blowing.
Honestly for $40 you'd have to be pretty retarded to say "oh well I'll just stock up on the Matt Hazards, Dark Sectors, and the Strangleholds of the word" Pretty shitty attitude.