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