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