I was running into some confusion about Boom Boom's Response - there was some disagreement whether she did true AOE damage to every enemy (similar to her Aggression incarnation), or whether she simply did extra damage to each enemy with a bomb counter. I reached out to the FFG rules team, and this was their response:

"When resolving Boom Boom’s ability at the end of the player phase, for each enemy with a bomb counter, you remove that counter and deal 2 damage to just that enemy. So, each enemy takes just 2 damage this way.

• Alex Werner, FFG Game Rules Specialist"

Thanks FFG Rules Team. Huge help.