Lysanderz, for the most part, it isn't a really brutal system. Especially when on the 'street' level. However, a couple bad rolls can take you from full health to gaping chest wound in a hurry. Especially when you start moving past street-level bad guys, into people with decent dice pools and weapons. A BF from an assault rifle with APDS is going to put a hurt on you if it hits, especially if you aren't one of those guys specifically built to withstand punishment. Shadowrun is incredibly lethal not because everything's going to kill you instantly (that's Paranoia XP), but because you can go from full health to burning edge to stay alive in a single combat turn if Murphy decides he doesn't like you, or you do something stupid, like being the only one not getting behind cover in front of guys with automatic weapons.