The first of Rosa's quarrels impacts the cloaked figure squarely in the back. The figure stumbles against the corner of the house {15 piercing}. It turns and attempts to bring a small concealed crossbow to bear from underneath its cloak, but Rosa's second bolt thumps into its chest {Initiative: won, killing blow}. The figure drops the crossbow and slumps backwards against the wall. Life fades. Rosa manages to slow the figures decent to the ground, muffling any potential noise. This close, she notices that the figure appears to be human, but with uncharacteristic very grey skin.

A moment or two later the 'werecrow' up on the roof seems to sense something amiss, and sweeps its gaze about the rooftops.

Rosa looks down the ~2 foot gap between the yellow-doored house and its neighbour in time to see a cloaked figure at the far end begin to turn toward her.

Spoiler: OOC
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Round 1, Rosa had surprise, and so hit the cloaked figure on the ground. Round 2, she had won initiative (rolls here), and so got her second shot off before the figure.

I'll need a Dexterity (Stealth) check from Borgrim and Rosa, both succeeding on an 8 or above (the 'werecrow' and the third figure both rolled low ).

I'll leave it up to iTookUrNick to decide what César did while Rosa attacked. If you wanted to have him move up behind Rosa, but stay hidden, for instance, that would work fine. But it can be anything that you think would fit.