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