Halo 4's multiplayer is fun, but I'm not as engrossed as I'd hoped. I'm not exactly sure what the main issue that I have with the multiplayer is - but something doesn't feel quite right.
It's not a bad multiplayer, don't get me wrong, but I feel that it's taken too much from Halo: Reach as opposed to Halo 2 and Halo 3. It just doesn't feel as impressive as the others.
The ranking up system essentially mirrors Halo: Reach, so it's based off experience rather than game wins. I personally much preferred Halo 3's ranking system - playing ranked games to acquire a skill level and then having match wins in other playlists to establish the rank.
Halo's borrowed the Create-A-Class system from various FPS games which is both a shame and a fresh change. It's hard to accept this system in place in a Halo game as the main focus is on strategy rather than loadout - if a team controls various portions of a map, they'll gain control of the power weapons while everyone else wields the same gun.
The map design isn't as diverse as it ought to be. Everything seems, for lack of a better word, like a doughnut. Everything seems circular and very similar which is definitely a shame.
A big blow for Halo 4 is that the MLG (major league gaming) circuit is for the first time since its conception not featuring Halo. This is due to the fact that the multiplayer maps aren't deemed fit for professional competitive play.
This being said, the above may well be a very subjective view as I certainly do have fond memories of Halo 2 and 3. It's a good multiplayer, any new fans to the series will enjoy it, but the potential disappointment for long term fans is there.