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