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