He's Got a Hologram!
Use a Holoduke in SP
The first time you’ll get the Holoduke is when you are on the rooftop at the end of The Duke Burger level.Enter the small room there and grab it from a crate.There will be an onslaught of enemies here, so feel free to use it and get yourself the achievement/trophy.
Foot stomp 12 aliens
You will come across the Shrink Ray a couple times throughout the game, but the first time is just before you get the HoloDuke at the end of Duke Burger.Use the Shrink ray on the swarm of invading enemies on the rooftop and look down at them as you run over them to stomp them.Get 12 and get your reward.
I Am All That Is Man
Discover all Ego cap awards
There are a total of 28 different ego awards that can be found throughout the game.Some can be found in multiple chapters multiple times (such as the paper airplane in Dam Top can also be found on the desk in The Shrunk Machine) but once completed in one chapter it will be carried over and counted as completed in others as well.This is why if you check the amount of ego items still left in different chapters it may say 2/6 or something to that effect, but if you then get those ego awards in other chapters it could then say 6/6 without even playing that specific chapter.Here’s a full list of the ego awards available:
Take a whizz in the toilet
Look at yourself in the mirror
Sink all the balls on the pool table without scratching
Sink a basket in the basketball net
Bench press with a full 600lbs.
Score over 250,000 on pinball
Hit the speedbag
Hit the punching bag
The Lady Kiler
Win on a slot machine in the casino
The Duke Dome
Xerox your ass on the copier in the construction trailer.
Slap the wall titties
Use the glory hole in the washroom
Cook popcorn in the upstairs office
Request a special dance from stripper on stage
Place the DVD on the desk in Duke’s office into the DVD player
Win a hand of poker on the terminals near the game room
Win a game of Alien Abortion
Win a game of Air hockey
Toss the Frisbee when you reach the ledge with the dead EDF soldier
Smoke the cigar (in the supply room behind where you start)
Read the porn mag on the floor in the washroom
Use binoculars to spot the sunbathers and GIANT SHARKS!
Use the computer in the booth to the right of the road where the gas can is
Read the porn mag on the floor of the chapel
Fly the paper airplane in the back of the bus at the far end of the road
The Shrunk Machine
Look at the calendar on the wall, through the double doors - same one as the “I need a date” achievement/trophy”
Read the porn mag in the office atop the small flight of stairs
I Need a Date
Look at every page of a calendar in SP
When you first get the freeze ray and enter the next room that is full of enemies, there is a set of double door on the far left side.Go through those doors after some pigcops bust through them and look behind you to the left on the wall to find the calendar.Looking at it will give you an ego award, but flipping through all the pages will give you the achievement/trophy
I Need a Towel
Get hit by 10 Pregnator bombs
You will first encounter the Pregnators in The Hive level.They are small aliens with four legs that spit white goo at you from a distance.Let it hit you 10 times, as nasty as it is, and then pay them back with some good old fashioned ass kickings.
Judge, Jury, Executioner
Execute 20 aliens
When you use the freeze ray on the aliens, instead of simply smashing them to pieces, you will always be given the option to execute them. Do so to 20 of them and this is all yours. You can execute aliens without freezing them, but it only happens sometimes.You can tell an alien is open to an execution when they slump down on their knees.
Take steroids in SP
The first time you get the steroids is during The Duke Cave when you replace all three power cells. Once the third has been placed, a bottle of pills rises and aliens start to pour into the room. Pop the pills and then pop some aliens.