I beat this campaign recently too. WAYYYYYYYYY better than Gears 4.
I stopped trying to pay attention to the stupidely convoluted Halo story ages ago, so I have no idea what was happening. However the last several levels built to a crescendo pretty nicely.
Graphics are another underrated Xbox title IMO. Very sharp, detailed, all at 60 FPS. I used to (in my head) prefer locked 900P over dynamic, but if this game is an indication dynamic is nice. It seemed like 1080P to me...
Halo campaign doesn't really feel right at 60 FPS though. Soap opera effect. Halo campaign are supposed to be methodical and feature epic graphics...which 60 FPS harms both goals immensely. Yes I just said the graphics are nice, but they should be state of the art in a Halo campaign, instead they're just..."good".
Complaints, you run out of ammo a lot. This forces you to scavenge and use other weapons, which is good, but I think they went too far with it. A lot of the guns feel like pea shooters, too. It doesn't flow as well as Destiny in PVE. But what game does?
Unlike Gears though the power weapons are actually power weapons, so that's nice.
6/10.