Was it the fight withLovely, Wolfenstein 2009 corrupted my savegame during one of the boss fights. I don't really want to start from scratch, so on the discarded pile it goes. :\
Maybe there really are technical reasons why it's not going back on Steam.
the Elite Guard in this weird machine who keeps spawning enemies until you destroy it
Somehow the boss fell through the floor, but was not killed. I almost gave up, and started shooting the ground. It (must have?) killled her, since the game let me go on.