Hey Zilfer,
I've been reading through the thread here and I noticed something about your payer's troll.
That adrenal pump he's using?
That is one very dangerous piece of gear.
Sure, it gives some great bonuses and makes you imune to stunning, but, once it is activated you can not turn it off.
The pump works for Rating x 1D6 turns; this duration cannot be ended prematurely. SR4A pg 345. (emphasis mine)
Also, on the same page:
When the duration ends, the user crashes, immediately taking one box of unresisted Stun damage for every turn the pump was active.
That means that he will take the damage and he can't even try to resist it.
In short, this is a useful piece of bioware (which, incidently, means that the hacker can't control it. It has no electronic components), but should never be a go to option, more of a "Wholly crap, we're gonna die if I don't use this!!!" option.
Also keep in mind that if you are feeling particularly evil you can call for a composure roll under stressfull conditions (like combat), if he fails the pump activates whether he wants it to or not.
Just my 2 NewYen worth.
-Erich