not quite this is how it goes down.
You're in the hallway, an alien shows up down the hall, I compaire your stealth to his perception to see if he sees you, then your perception to his stealth to see if you see him, if he sees you and you don't see him I'll just post up him attacking you, if you see him and he dosn't see you then i post him in the hall way eating something, playing solitare, reading the newspaper ect ect lol. If you both see each other I post him charging at you. Next I roll each of your dice, then I compaire your agility+your dice roll to his +his dice roll, that decides who's attacks show up first. even if he is faster than you he dosn't have a ranged attack so you attack with your ranged first. I compair your accuracy+your roll to his agility+his roll deciding if you can hit with your ranged weapon, if you hit I deduct your ranged attack, first from his defense+his roll, then from his health. Then since he has a higher agility i deduct his attack+his roll from your defense+your roll, then from your health if it gets that far, then I deduct your attack+your roll from his defense(what's left of it), and then his health(what's left of it). Does that make more sense?
The system has undergone alot of monkeying since I first posted up this idea thread, I've been finetuneing/testing and testing again it is quite ballanced, and I'm more than willing to use my super GM powers if the need occurs.