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