I mean, what must they be thinking about Halo 4 specially after their last Halo wich turned out to be a major dissappointment.
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Plus they brought back the beam rifle, carbine and BR, got rid of bloom on most weapons but it works on those that have it, got rid of armor lock, camo is useful again but still annoying, regicide is great, vehicles are great, maps are amazing compared to Reach's, chief's great, etc.