Positions unchanged from Round 2. #2 is down 2 HP, 1/4. #4 is down 2 HP, 4/7. #1 has been Stunned (losing his standard action) and attempts a guard action with his remaining minor action. #4 spent his whole turn trying to reverse the virus to no avail.
Wilhelm is down another HP, 3/5.
Pudge's assailant finds his SMG's photon bolts hammering into some kind of barrier. Before he can register what's happening, the concussive force of the bursting forcefield staggers him. He desperately tries to regain his bearings.
Serana's hilt shatters the heavy's visor. He backs off and grabs his repeater, trying his chances with the virus instead of a clearly superior fighter. He's not nearly good enough to counter it, and he discards his weapon again, uttering another string of curses.
Wilhelm is in his element. His scythe comes close to decapitating one man entirely and he instead manages to get away with a nasty scratch. The two attackers consider disengaging but stick it out, rushing him together.
Rolls
#2's skill - (1d20+1)
(5) + 1 = 6
#2's damage - (1d6+1)
(6) + 1 = 7
#3's skill - (1d20+1)
(2) + 1 = 3
#3's damage - (1d6+1)
(3) + 1 = 4
#4's KNO|Tech check to end Disabling Virus - (1d20+2)
(9) + 2 = 11
#1's guard roll (will replace his defence in the coming round) - (1d20+1)
(8) + 1 = 9