It's a battle fuck game, so no you don't need to lose to get H-Scenes. But every floor has a unique defeat "battle" scene, some Sidejobs aswell. So if you want to see everything you would need to lose on each floor once. But H stuff in itself is based on Karryns Desires. At the start, nothing will happen aside from petting because her Max Desires are too low. But with passives they get higher an Karryn allows for more stuff to happen the higher her Desires go.So you have to lose fights to see the h-scenes? no story?