[MagikMasterMind]

Yeah, has Zeru said, some more 1 player alternatives would be nice. I always liked the idea of achievements, like, once you activate a certain achievement *example, get 2k kills with shotgun once activated*, once you do it, you could upgrade your weapon by one of those: weapon's Ammo Capacity, Fire Rate, Clip, Double Barrel, Shooting Distance, Amount of energy taken reduced by x percent... Only 1 achievement can be activated at a time.