At the Starfinder Delve today, I had a group both have a TPK… and beat the scenario.
Their mission was to close and seal both doors, to prevent Swarm warriors from overrunning a space station before it could be evacuated.

They couldn’t manage to get the far door before the door that was their way out was being rushed.

So they sealed it from the inside, and fought to the death to close the second door.
Obozaya died right after this, detonating a grenade at point zero so Iseph would live long enough to seal the last door.

From the inside.