Game Overs are fun in this type of game. If you don't lose, you won't even see any sex, might as well not play the game and just watch the gallery. And if you're concerned about your progress being lost, you can literally edit the save file to clear the level, it's plain text. I vote for Kappa
It is going not going to be instant game over actually (depending on your health of course). Once you unlock the animation, you have to make sure not to get grabbed again. The knock down animation will work like other enemies. And Kappa will be a great choice.
