cant for the life of me figure out the win condition on the eliminator stages. any help?

i have been having a bit of difficulty on this level because the criteria for the level to end is unclear. when you killed the named dude by the catapult at the end it seems you must also kill several of the other enemies, but which ones seems to change. i have been testing if it has to do with enemies proximity to the catapult and don't have a conclusion yet. anyone already figured this one out.

hey currently there are just the single segment categories, i have been working on some single level paths, is it possible to get them added as categories.