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