Play Episode 1: Mission 1 - "Hollywood Holocaust" on the easiest difficulty. From the start of the mission, fall down the ventilation shaft, and run directly to the alley behind the movie theater. Use the pig cops as platforms to jump onto the small lip running along the wall. From there, go to the bridge. Once on the bridge, run past the pig cop and end the level to get the "Alien Bastards Are Gonna Pay" achievement.Easy "Hail To The King, Baby" achievement
Note: This requires the help of another player. Play Episode 3: Mission 11 - "Stadium", and have the other player host the game. He or she will spawn in the elevator, and you will spawn on the field and can quickly collect the RPG. Enable the Aim Assist option so none of your shots miss. Go to the corner of the stadium, next to the RPG ammo. You should be able to target the other player's respawn point from this position, and can collect the nearby ammunition when needed. Have the other player repeatedly press [Use] to respawn immediately as you kill him or her repeatedly with one shot of the RPG.Easy "Oomph, Uugh, Where Is It?" achievement
This achievement can be earned through normal progression, but you can grind by repeating the same mission multiple times. The achievement counts secrets found across all playthroughs rather than the number of unique secrets discovered.Easy "Shake It Baby" achievement
The first time that this can be done is during Episode 1: Mission 2 - "Red Light District". Enter the strip club, walk up to a stripper, and press [Interact] to get the "Shake It Baby" achievement.Steam achievements
Successfully complete the indicated task to unlock the corresponding achievement. To view your achievements and stats in Steam, select "Community", "My profile", "View all my games", then the game and view stats.
- Alien Bastards are Gonna Pay: Finish the "Hollywood Holocaust" level in under 3 minutes.
- Come Get Some: Complete "Shrapnel City" on any difficulty.
- Damn I'm Good: Complete "The Birth" on any difficulty.
- Doomed Marine: Find the Doomguy on "Death Row" level.
- Duke's Mighty Foot: Step on 40 enemies after using the Shrinker on them.
- Duke, Use The Force!: Find Luke Skywalker on "Lunar Reactor" level.
- Gonna Rip Em' a New One: Get 100 total kills in Dukematch games (Online).
- Hail to the King, Baby: Earn respect and get 500 total kills in Dukematch games (Online).
- I've Got Balls of Snow: Complete "Duke: Nuclear Winter" on any difficulty.
- Let's Rock: Complete "Lunar Apocalypse" on any difficulty.
- Limbo time!: Complete "Duke Caribbean: Life's A Beach" on any difficulty.
- Oomph, Uugh, Where is it?: Find 70 secret areas.
- Piece of Cake: Complete "L.A. Meltdown" on any difficulty.
- See You in Hell: Get 250 total kills in Dukematch games (Online).
- Shake It Baby: Tip an exotic dancer.
- Shame: Use a cheat code.
- Shit Happens: Step in a pile of excrement.
- The Patriot Act: Complete "Duke It Out In D.C." on any difficulty.