Full list of all 27 Duke Nukem 3D: 20th Anniversary World Tour achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Find 70 secret areas.
Kill 10 bad guys in 10 seconds while on steroids.
Find Luke in the Level "Lunar Reactor".
Step on 40 enemies after using the Shrinker on them.
Burn 50 bad guys to death.
Listen to Developer Commentary (Use at least one trigger).
Complete "The Birth" on any difficulty.
Find any secret level.
Find the Doomguy in the Level "Death Row".
Complete "Shrapnel City" on any difficulty.
Kill every enemy on a level.
Complete "Lunar Apocalypse" on any difficulty.
Complete "L.A. Meltdown" on any difficulty.
Carry all weapons with ammo at once.
Use a cheat code.
Finish the "Hollywood Holocaust" level in under 3 minutes.
Finish any level on "Damn, I'm Good" difficulty.
Complete "Alien World Order" on any difficulty.
Kill 1000 enemies.
Find Sam in "Mirage Barrage".
Use the Incinerator
Step in a pile of excrement.
Tip an exotic dancer.
Kill 5 bad guys with one shot.
Kill a Firefly Trooper while it's flying small.
Use the hookah in High Times.
Find a secret area.