Littered across the majority of video games are a collection of boss fights, designed to be tough and memorable encounters that must be defeated before life can continue.
More often than not, they're weaved into the game's narrative, so when the foe is presented as a necessary obstacle to overcome, you aren't even seeing the resolution to your story until they're in the ground.
The satisfaction of seeing a significant enemy fall is glorious. The game over screen has been swatted away, and the hero's might has proven too much for the beast that stands before them. What was once a nail-biting, hair-extracting affair is now a thing of the past, and everything can continue with the knowledge that the enemy cannot come back to bite them.
However, there are instances where the story you were oh-so happy to see unfold gets plucked from your grasp. The villain escapes, deceives or overpowers - through pre-destined or scripted events - and everything kicks back into gear.
Victory was promised, yet depleting the health bar of the following doesn't mean anything, as they were always going to keep coming anyway.