Spoiler: Modifiers
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Jashugan is (far as I know) using a weapon capable of burst fire. That's +10. The room is small, so he's at point blank range, for another +30. Both men are using rifle type weapons - no use in melee, so as far as that goes, the plan is sound. Now, if you roll well, you get an extra hit for each 10 points by which your roll exceeds the difficulty. So if you had rolled better, you could have shot - and potentially killed - both men.

Fen rushes a guy and takes a swing at him. Unfortunately I don't have a lot of forgotten modifiers to add to her roll. Charge excludes all-out attack, which would have been enough, and other than that he would have needed to be surprised.

Wait ... I just changed my mind. He's in the smoke, and unaware of the attack. That's a +30, but also a -10 for the smoke, but the net result is still that Fen hits.

I'm off to work now, I'll post in the evening again.