Okay here we go.

Pc 1 Addison
Pc 2 duncan
Pc 3 vesta

Npc 1 hama
Npc 2 nick

Pc 1 kills npc 2 he explodes and stays put on the ground.
Pc 1 gets burned from the explosion together with npc 1
Pc 2 and pc 3 enter the arena to aid npc 1 and pc 1
Npc 2 explodes again burning pc 2 and pc 3 too.
All pcs died reseting the scenario.
Nick and Hamaguchi and every npc in the area died in the past 10 minutes so they get to come back from dead too.
The same scenario plays now but without Addison ever having been there. She is back on the spot she was at this morning.

More questions?