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