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 Luke in the Level "Lunar Reactor".
Complete "Lunar Apocalypse" on any difficulty.
Complete "Shrapnel City" on any difficulty.
Complete "The Birth" on any difficulty.
Find 70 secret areas.
Complete "L.A. Meltdown" on any difficulty.
Listen to Developer Commentary (Use at least one trigger).
Kill 1000 enemies.
Find any secret level.
Kill 10 bad guys in 10 seconds while on steroids.
Find the Doomguy in the Level "Death Row".
Step on 40 enemies after using the Shrinker on them.
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.
Burn 50 bad guys to death.
Carry all weapons with ammo at once.
Kill a Firefly Trooper while it's flying small.
Find Sam in "Mirage Barrage".
Kill every enemy on a level.
Use the Incinerator
Kill 5 bad guys with one shot.
Step in a pile of excrement.
Use the hookah in High Times.
Find a secret area.
Tip an exotic dancer.