I wanted to try for something a bit more positive with the theming, so I’m thinking of something like a rescue mission, rather than something like an attack or defending scenario.
The theme with this is somewhere between “Survival” and “Escape”.
The basic story I’m starting with is that you snuck onto a moon colony where your friend (lover? pet? still not sure what I’d want to go with) to rescue them. Something goes wrong and you have to survive and escape.