You wait patiently in your filthy prison cell for a patrolling guard to deliver you your final blow. But the army of SS who transported you to your cell forgot about that trusty knife BJ holds in his pocket. So you stab the guard to death and make your way toward the sewer - the only location that isn't locked from your access. Unfortunately, you also learn what familiar (and unfamiliar...) experiments have likewise been detained in the same facility, and they know as well as ever to terminate any Allied force trying to escape from these confines. So...Eisenfaust Prison is real!
No qualifier about how I start in the name here, because there is only one way you're allowed to start this level, and it's not in good condition. 71%/59 will have to be good enough to start Floor 21 though...
2