Grendel- Commandeering Snazzgun

The thought doesn't last very long, as with a screech of grinding gears, a massive slab of concrete is hurled aside as the warboss, battered but still alive, regains his footing, and is looking right at us. We have to roll surprise (things usually don't survive a burning building dropping on them) and all fail. The Warboss pulls out his snazzgun, and unloads on us. Or tries to, but it overheats and he drops it to the ground.
...

But as we are trying to figure out what to do, Grendel announces he is charging over to pick up the warboss's dropped snazzgun, now cool again, and wants to attempt to discharge it on the ork. As he charges in, we finally hear the few aircraft from the PDF/IG forces overhead, dropping more bombs. Everyone else runs after grendel, as anywhere is better than where they are. Grendel has to roll concealment while running to be able to pick up the gun while so close without getting noticed. He succeeds. He fires the Snazzgun, and unfortunately, the hit is in the body, and Mega Armor give 14 AP to the chest. We all think his cool idea is going to fizzle, but wait! He rolls damage, and rolls TWO TENS. He confirms the critical, rolls again and gets a nine and an one. He spends a fate point to re-roll the one and gets another ten. He then rolls a nine. That is 10+10+9+10+9= 48 energy damage to the chest. Not only does he kill the warboss by blowing a hole clean through his chest with a beam of energy, he also accidentally ignites the ammunition there, which proceeds to explode. The GM rolls the blast radius, as 3m, so while the rest of the party is fine, Grendel has to worry about more damage while at 5 wounds.

BUT WAIT, HE MAKES HIS AGILITY ROLL, AND NOTHING HITS HIM. We are all feeling pretty happy for Grendel, when the GM abruptly announces he is rolling for the Daemonhost to dodge, as he was also in range. The daemonhost fails. He rolls the damage (1D10+5 X) and we all watch as he rolls a ten. After thinking for a bit, he decides that righteous fury, or something similar, should apply here, and has the daemonhost roll to dodge again as the means to see whether it is confirmed. The daemonhost fails the roll. The GM rolls damage again. HE ROLLS ANOTHER TEN. He slams his head down, and scoops up the dice and rolls again. Nine. Grendel just killed an Ork Warboss with his own gun in one shot, and killed an Unbound Daemonhost with the ensuing explosion, but came out of it without a scratch.

- The Guy Who Cried Grendel, Part III