I agree with all of these except for #4. Some of the encounters, especially in the open-world setting made for some of the best I've had in any Bungie FPS. Particularly with how AI use cover in the airplane scrapyard. I actually had an oh so rare moment where the I felt like the AI was one step ahead of me in terms of finding cover or having the tactical advantage as I chased the Reaver Vandal down and eventually succeeded in cornering him.Multiple reasons. You're essentially going from point A to B in a very lackluster fashion.
1.Almost all the missions are short as stink.
2.The 'bosses' don't display any interesting abilities or being unique in nature. They just having bigger HP bars or increased damage outputs.
3.Whatever story we're getting in these missions is seemingly not even at Halo's standards. We'll see if later missions fix this.
4.The enemy encounters are extremely lacking. Parts of some missions are the game just opening up the very apparent monster closets to let the enemies mob rush you.
5.What we do on these missions are boring. It's either fetching or hacking all the time.