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