If only the sparrow would wear a mask over his/her eyes, the katana would cut the armour, it's approprietly dramatic.
Actually, i think a normal energy gun stands some chances on the armour, but melee weapons don't. Might need house-ruling for some kind of critical hits perhaps.
As for now, i've read trough the 'coalition wars:sedition' scenario and like it a lot. Full scale face-off between fascists with technology and demon summoning magicians was really what i was looking for.
When i turn on some Iron Maiden songs, it really seems to make sense in a realistic way, it's all like it should be...
"There they go, teleported on a hill of overturned runestones, good glance at the platoon of black-clad coalition grunts and their spider warmachine. Making a fat sizzling lightning bolt drop on them is just the beggining, soon the clear sky is twisted into a physics-defying whirlwind, the machine limps with one foot melted away and a lone surviving dead-boy runs away.
As much as Magnus would delight to have Morrigan give the spider tank another smile, barking of those who smelled the magic from across the field is much more of a concern. Marco's goggles adjust their sights on the first dog-boy, a hulking bulldog hybrid who barks an encouranging battlecry, runed parts of his bronze machine gun move... At the same time the quiet, shy Georginia completed her transformation and a puff of sulphur escapes her nostrils.
To the grav-bikers flying overhead, it's not even the primary target, as in the distance the horizon is lighted up by a ley-line growing in power. Their names are Astaroth, Loki and Shub-Niggurath, and summoning them was deemed by the Tolkeen council as nessesary evil."