User blog comment:Damac1214/Why Call of Duty is Call of Duty, Fallout is Fallout, Halo is Halo, and that they aren't going to be changing anytime soon/@comment-78.97.91.207-20130312164000/@comment-78.97.91.207-20130312194735

The health system was similar, not identical. You had health and shields, but in Reach, small amounts of health do recharge, but not completely. You could also remain with zero health and full shields in CE and Reach, something that could never happen in Halo 2/3.

CE enemies were pretty darn smart, even compared to most games today. I thought you were referring to them being physically though, as in having a lot of health.

And yes, every Halo game has had spread, or recoil, or whatever you want to call it. Besides automatic weapons, precision weapons ALSO had recoil. Fire your pistol at a wall in CE and you'll see, fire your Br in Halo 3 and you'll see. Halo 2's precision weapons lacked it, I believe. Reach definitely exagerated it, but it was always there.