There are 14 scenes: intro, ending (always the same on last map), 3 for winning the first 3 levels, 3 victory variants in each of the next 3 maps (they branch based on who was defeated or if no one was).
It's not really "lose to win", it's more of having different types of victory scenes. Losing everyone causes he level to reset. I imagine that players who want specific outcomes will manipulate a companion to get defeated, which fits the theme of the story.