You easily win surprise, so there's no dodge roll. No opposed means 6 net on 12 dice, which is a critical success by any measure. Take an edge and describe the scene. OR DON'T, LOL. The punk outside is down before he'll get to act as are 2 in the van. One punk and the lt are still barely conscious, but won't be able to react this pass (before the drugs kick in.) People can declare actions. This combat is basically over before its started.
Almost as soon as the door opened to let the punk out, sundance fired a couple of micro splash grenades at the opening and sunk one inside. The other, fired first, bounced off the side of the door and burst a few meters away, drenching the legion ganger with one and then another dose of the powerful toxin. The reaction was delayed, but the punk at the door slouched out and fell to the ground.