invaders will sometimes refuse to ever leave the dungeon entrance. the only way to continue the game is to quit (without a save,) or spend a few gems to cause the invader to retreat.
once i won combat on turn 1. my servant was not closed to dying, crying, or cumming at the end of combat. the invader was dead, had zero mind, and zero arousal (killed with deny.) after combat i was informed that the invader won. i did not lose resources.