1) Just like in a tabletop RP you control your character and ONLY your character.
2) You don't write in cheats/god mod. IE you are playing and your character becomes pinned buy enemy fire and a stray bullet pierces him through the shoulder as told by the GM. you can't respond with "TING! the bullet bounces of Imazhker. He looks down at his trusty war torn armor, another close call..."
3) TO follow up on two you can't shoot at those say 6 guys firing at Imazhker and type "BLAM BLAM BLAM Imazhker unloads his trusty six shooter hitting each guy. SO NO AUTO HITTING. GM will tell you how well you do.
4) GM is your god, GM will be fair, GM will be final; if you don't like it borrow a quater and call Batman he might be able to help you...