The first big change I noticed was how much better the graphics looked, with this being the first Halo game brought
out specifically for the Xbox One and (possibly) PC, rather than the rest which originated on the 360 etc, within the 9 hour sitting
of playing through the campaign in a co-op game I did notice a few
glitches, one
of my team mates fell through the
map, it randomly decided to teleport us forward past 2 vehicles when we were searching a
map for Easter eggs but other than that the game was flawless, the 13 hour download time was worth the wait (I'm assuming this was due to the Microsoft servers, I started downloading at 18:30 on the 26th and when I checked my Xbox at 07:40 am the following morning it was at 93 percent, my connection is 152mbps so as you can imagine I was rather annoyed and surprised how long it had taken, after playing the game for all
of 30 minutes I had completely forgotten about the length
of time this had taken, I'll let 343 off with it as they have done such a good job with Halo 5.