So I have another big gripe with the Sigma fight 1, and that is that Hadouken does not one-shot him. I would highly reconsider to change this, as that is the whole reason for the upgrade. I finally managed to beat him on Hunter mode, but I had to shoot two Hadoukens at him and still take him down with the buster, as he still had about 16 HP left. I might be okay with requiring more than one Hadouken in Veteran, although that means getting past the dogs each time unscathed. You were at least kind enough to skip the dog fight if you die to Sigma in Rookie and Hunter modes. I reiterate, as I have before - Sigma 1 in Hunter mode is way overpowered health-wise. If not removing any of his fighting patterns (which I don't think you should), then buffing up X's attacks and defense (with 100% armor upgrades) would be nice. My final point is that because Sigma 1 difficulty is so high, I rarely get to Sigma 2, which when I do I only get a small amount of time to figure out strategies, as that phase also does a ton of damage, as it should. But I'd much rather get to 2nd phase and struggle there than the 1st phase, because the second fight isn't as difficult once you figure out the strategy. Currently it's not as rewarding, only once you get through phase 1. I think it should be the other way around.