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