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