My first impressions:
Campaign....WOOOOOOOOOOOOOOOW THIS LOOKS AMAZING!!!! ...two hours laters....hmm , feels linear, doing much the same, some stuff from COD..
Multiplayer...
HALO 4 servers down X_X... Woohoo after ten minutes I can play an King of the hill match with 8 players! Vehicles in KoH with 8 players? It ended up being spawn killing for the ones sitting in the vehicles (hate that shit).. ..Try spartan ops...Halo 4 servers down...Try multiplayer again but takes to long to find match ..
Now taking some break with watching MCI/AJA.