Radon's shot hits the perp in the upper arm, leaving a dark scorch mark and causing the man to let out a yelping curse. The guy immediately runs 40 feet up the wall, ending up on the roof; mid-journey, he pauses at an odd and disturbing angle to take a shot at Radon with the now-reloaded Energy Launcher.
1d20+8=25, 2d8+3d6=1515 acid damage, DC 15 Fort save or be sickened for 1 round.
Spot check, please.
EDIT: Yes, swift action to direct the sensor.
((Roy & Jack, it's go time. You guys can post in any order, and then Radon gets another turn.))
EDIT: ((In the future, can you guys post what it is you're attacking with and any extra effects, etc.? That'll cut down on page- and tab-jumping for char sheets
))