Halo is OK for what it is...... but anyone who is REALLY a fan of first person "twitch" shooters really owes it to themselves to check out Shadowrun. It's fun, strategic and the mechanics of the game reward team players. Lone cowboys will be left in the dust. Plus it's the only game to date that allows console players to play head to head with PC players.
https://forum.blu-ray.com/showthread.php?t=76609