Okay, so we all know that spirits are pretty darn invulnerable, as a measly force 5 Water spirit has 10 armor (hardended) and someone would either need to blow past it's armor with a mundane weapon to hurt it (and there is some speculation on that) or cast a spell, or hit it with an elemental damage (WP grenade, shock gloves, Hydro cannon)
But on the reverse end, how easy is it for a spirit to hurt someone?
A force 5 water spirit, from what I can tell, fallows all the normal rules of combat (including attacks) and has a measly 5 Str. Meaning, what it does a base 3 Stun Damage (Attacking 'unarmed' which is it's only attack skill.) That' s pathetic in the world of shadowrun, and I can't seem to find a way that these guys would be more than a minor annoyance in a fight.