after dealing with all the shit they went through they begin their final revenge after steaplhy killing two guards they plant a bomb in a bottle of shampain where it takes out a number of them. 

after a skuffle with few renegades howard tries to escape but is soon gunned down by frank who tells him everything they did made his kill his own wife made him kill his best friend and soon they tie him against his car as it explodes killing him. 

with saint dead the imps and loona return to hell while frank castle soon becomes the punisher where to the imps he will be big help in kill bad guys around the end