Same ole, same ole.
With that being said, the game does offer some new weaponry, which is impressive at first, but quickly dies down. As a typical first person shooter, you'll run and gun your way; that's always fun for mindless entertainment, but you certainly won't be cognitively challenged. In my experience, there were very few glitches and therefore the game flowed evenly and cleanly; that's always a plus. Some new big enemies are fun to destroy, but again feels like you've done it before. In all, the game is fun, a buyer to have in your collection and talk to your friends about; other than that though, the game is everything you've experienced before; so if you like the tried and true, then sure get it. If you enjoy playing games that offers a verity, then don't expect it here; just play Halo again.