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