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All Too Easy

Find a secret area.

Piece of Cake

Complete "L.A. Meltdown" on any difficulty.

Alien Maggots are Gonna Pay

Finish the "Hollywood Holocaust" level in under 3 minutes.

Invaders Must Die!

Kill 1000 enemies.

Take No Prisoners

Kill every enemy on a level.

Cheating!

Use a cheat code.

Secret Achievement

Secret Achievement

Secret Achievement

I Never Inhaled

Use the hookah in High Times.

See, I'm Tough Too!

Finish any level on "Damn, I'm Good" difficulty.

Let's Rock

Complete "Lunar Apocalypse" on any difficulty.

I Never Knew This Was Here

Finish a secret level.

That's What She Said

Listen to Developer Commentary (Use at least one trigger).

Smoke 'Em If You Got 'Em

Use the Incinerator

Roast 'Em

Burn 50 bad guys to death.

Buzz Off

Kill a Firefly Trooper while it's flying small.

More Than 2 Weapons At Once?

Carry all weapons with ammo at once.

Nukem All

Kill 5 bad guys with one shot.

Rage Engage

Kill 10 bad guys in 10 seconds while on steroids.

Come Get Some

Complete "Shrapnel City" on any difficulty.

Damn, I'm Good

Complete "The Birth" on any difficulty.

I'm Back, Baby

Complete "Alien World Order" on any difficulty.

Duke's Mighty Foot

Step on 40 enemies after using the Shrinker on them.

It Happens

Step in a pile of excrement.

Shake It, Baby

Tip an exotic dancer.

Oomph, Uugh, Where Is It?

Find 70 secret areas.