Where to start? This is the best Halo game on soooooo many levels. It is beautiful to look at with far more detailed graphics than the others. The campaign story mode is exciting and next only to the original story. It lets you drive pretty much every vehicle you find. Another nice feature is the customization that you can do. If you customize your character and the armor (and there are a LOT of armor customizations) you keep your customizations in the campaign mode.
Speaking of customization, Halo Reach features the most amazing editable base map yet called Forge World. A brilliant and beautiful ocean side landscape which is absolutely massive in scope. There are high sheer cliffs, islands, cave systems, amazing waterfalls and a valley reminiscent of something from Jurassic Park. All of this for your imagination to go nuts on and build to your hearts content.
Weapons and vehicles have been upgraded and in some instances replaced. The handgun is now a weapon worth using and not dropping right away. There are new armor features including jet pack, armor lock, sprint, evade, active camo and drop shield.
Online multi-player is super fun allowing you to take advantage of all of these new features and use them against friend and foe alike from all over the world.
Halo fan or not this is one of the best shooters out there right now and I highly recommend you get it. Trust me, I know what I am talking about, I have three kids who have helped me write this review and they all love it.