As a campaign player and a fan of largely a single player games ... This is a great halo game. It blends a lot of elements and options that have been popularized through games like itself and other franchises without being over bearing. There are straightforward linear missions, open world optional base raids, treasure hunts, and collectibles. In terms of difficulty, it is pretty low. Difficulty is measured by enemies being bullet sponges, not improved AI. Which is fine, it's a halo game. I had fun with it.