Here is the full list of all 28 Duke Nukem 3D: 20th Anniversary Edition World Tour trophies - there are 10 bronze, 11 silver, 6 gold and 1 platinum.
Completed all trophies for the game!
Complete "Alien World Order" on any difficulty.
Kill a Firefly Trooper while it's flying small.
Find Sam in "Mirage Barrage".
Kill 10 bad guys in 10 seconds while on steroids.
Use the hookah in "High Times".
Complete "The Birth" on any difficulty.
Kill 1000 enemies.
Complete "Shrapnel City" on any difficulty.
Find 70 secret areas.
Complete "Lunar Apocalypse" on any difficulty.
Find Luke in the Level "Lunar Reactor".
Step in a pile of excrement.
Finish the "Hollywood Holocaust" level in under 3 minutes.
Listen to Developer Commentary (Use at least one trigger).
Complete "L.A. Meltdown" on any difficulty.
Kill every enemy on a level.
Finish a secret level.
Find the Doomguy in the Level "Death Row".
Burn 50 bad guys to death.
Tip an exotic dancer.
Step on 40 enemies after using the Shrinker on them.
Carry all weapons with ammo at once.
Use the Incinerator.
Use a cheat code.
Finish any level on "Damn, I'm Good" difficulty.
Kill 5 bad guys with one shot.
Find a secret area.