Much more tactical, you could review options, study the situation before jumping in, use stealth if you liked, take different paths. Story held me right from the start, and the graphics are amazing, especially the scene where the building collapses next to you
It just seemed so much more to me than, jump, shoot etc.
MP was rubbish though, not that that bothered me.
God, I'm back late to the party, sorry that the reply has taken a while =/
See, with Crysis it was all Graphics, spectacle, and not much else. Perhaps I should have taken a tactical approach, but I just ran in, shot censored up, and ran out. With Halo, I run in, shoot censored up, then have a look round for skulls, audio clips, story links etc, and thoroughly enjoyed it =/
Not saying Crysis doesn't have that, I did enjoy Crysis2, but no where near as much as I enjoyed Reach. Hell, Reach campaign could possibly be one of my favourites of all time.