Halo 4's campaign was repetitive as well. Most of the time, you were on the ground shooting Prometheans with a Suppressor. Halo 4 felt too linear, whereas in Halo CE you can explore the huge levels and mess around a little if you want to. I really couldn't find any mission where I could do this in Halo 4. Halo CE is my favourite Halo game, because of it's large levels, revolutionary gameplay and mystery, and I don't think anything will be able to top it. But hey, it's just my opinion