Info on Duke 3D
There are four skill levels on Duke 3D:
Piece of Cake (simple)
Let's Rock (medium)
Come Get Some (hard)
BEEP I'm Good (very hard, no cheat codes allowed)
In Piece of Cake, it is very easy. Not many enemies and enemies are easier to kill. You might be able to beat this without the DNKROZ (god mode) cheat. Good for beginners.
Let's Rock has enemies that are a little bit harder to kill. A few more enemies and you probably need DNKROZ to beat this skill level.
Come Get Some gets hard to the point where it is almost necessity to use the DNSTUFF (get everything) cheat if you aren't using god mode. DNKROZ is almost something that you need even if you are an elite player.
BEEP I'm Good is very, very, hard. GameCentral has not been able to beat this skill level. As soon as you type in DN, it says that you are too good to cheat. No god mode or any other cheats. Good luck on this one.
Episodes include:
L.A. Meltdown
Lunar Apacolypse
Shrapnel City
The Birth (Atomic only)
Which episode you pick is really up to you. The Birth is probably harder than the other episodes but other than that fact the episode you choose is totally what you prefer.