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