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