Boss Battle Issues

[CarribeanThunder]

Odd. I have my graphics set on Custom ( Or had, since for some randomly odd reason, my Desktop died on me ), and when I've gotten to the last fort, I don't get "bombed." Oh well, shows how clueless I am

Thanks for the apparent reason given by Angel Daggerfury.

P.S. I do already know the first trio of forts use Round Shot, and the next quad of forts use Firebrand. I just always saw the last fort using Round Shot instead of Explosive. Maybe this was already fixed and I missed it all...?

Maybe you could possibly show me a picture of the last fort using Explosive, if you happen to have any?