You roll a +5 and a -3. That is WAY more than enough to KO the Horus guard.
The covered serpent guard looks at his dead companions and runs out into the centre of the whole area, he then rolls on the ground and shoots at Richard. He rolls a +2 and a +1. The blast from the staff does 7 damage as it skims past Richards arm, leaving behind a burn and a tear in his jacket.
Round 2
South area
Richard (P90) 0|45|4
Andrei (MP5) 0|25|2 (Cover)
Marcus (Zat) 0|n/a|n/a
Kael (Staff) 0|n/a|n/a (Cover)
North area
Steve (P90) 0|45|3 (Cover)
Center area
Serpant guard 6|n/a|n/a
Same order again. Fire first.