Mostly, you set up your character to be a hard-ass, which will make it hard for you to get along with our characters, as taking a realistic standpoint, none of us signal out our characters to be badasses like your suggesting. In fact, none of us are really bad ass. Just misfits from a society who didn't want us, coming to a the only place that would take us.
I suppose your one of them aswell. Everybody needs one quirk I suppose.
Basicly, you have to realise that you won't be able to rush headlong into things like your saying your character is likely to do. Not only will you die, realisticly mind you, in a hail of gun/plasma/lazer fire, but other people may very well die too.
Getting things done just doesn't happen. Messing things up happens far easier however.
Otherwise, besides making a general trouble of yourself by trying to charge headlong into shit, or not getting along with many people, your not introducing any skills I think.
Your character is a loner, possibly sociopathic, an dangerous risk taker to all around him. Which disadvantages him to us nobodies who, though don't have any useful qualities or skills as of yet, don't have any defects as such.
I'm not stopping you, but instead I'm going to let Pandar and Inaluct take their shots. If they okay it, outside of what I said, because you mostly put troubles on yourself making it harder to RP your character, instead of godmodding, you can join.
I'm not really good at making tough decisions.