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