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