* Episode 6, map 9 is the boss level of Episode 6. For some players, it can be ThatOneLevel, but for others, it's a balls-to-the-wall slug-fest where you mow down an army of Nazis and then face-off against a pretty interesting boss. If you enjoy rooms packed with a lot of guards to mow down, then this level is probably your thing.
* Episode 6, map 10, the secret level of Episode 6, provides four quadrants to explore, a fun amount of guards to mow down and plenty of challenge. This is also the only map outside of Episode 2 where you can fight Mutants again [[note]]for better or worse (see DemonicSpiders below)[[/note]] Three of the four quadrants have an encounter with [[DegradedBoss Hans Grosse]] who is just as strong as ever like he was in Episode 1. Besides one other level, this is the only level in the original series where you fight "Super-guards" like a more regular enemy.
* Episode 3, level 9. Aside from the [[spoiler: Fake!Hitler Ghosts]], this is the [[ItWasHisSled all-too-famous level]] where you get to face Adolf Hitler himself. In a [[StupidJetpackHitler Mecha Suit]] armed with [[GatlingGood quad-Gatling Guns]] no less.