Full list of all 82 Sir Whoopass: Immortal Death achievements.
The base game contains 66 achievements, and there are 2 DLC packs containing 16 achievements.
"Defeat" The Immortal
Kill 1000 enemies
Find and buy the HoverCraft 2500™
Release all the chains
Kill the Ent
Collect 50 Wheels of Cheese and make Sheo proud!
Live out your cowboy dreams and make a triple-shot
Kill 500 enemies
Kill an enemy using metal bars
Kill Big Boi
Drink your very first grog
Eat your first grilled chicken
Jump 500 times
Dodge 100 times
Kill your first Grumpy Worm
Kill a Billy-Goat
Loot 6 drunken orcs
Collect 25 Wheels of Cheese
Kill your first IRS guy
Eat 100 Gnomes
Kill your first Shotgun Knight
Whoop Ass 10 times!
Kill your first Billy Bob
Buy a surpise from Melisande
Kill the clown in the sewers
Kill your first Fungoid Bob
Blow up yourself and an enemy with a dynamite barrel
Jump 100 times
Kill your first Skelton warrior
Kill 100 enemies
Beat the first Flappy Knight level in the arcade machine.
Spoil the Bard so he can afford new and fancy clothes.
Collect 10 Wheels of Cheese
Dodge 20 times
Put out the fire
Kill you first Grenadier
Find the marvelous Chickenator
Use the stinky outhouse
Get eaten by a shark
Pick up a Mistlefoe
Make the Bard play another song
Jump 20 times
Collect 5 Wheels of Cheese!
Kill your first Sven-Olof
Kill your first Orc Hipster
Kill your first Orc Warmaiden
Catch fire
Collect your first Wheel of Cheese!
Read a book from a bookshelf
Kill your first Orc Noob
Eat your first Garden Gnome
Get your very first lethal weapon
Have three grogs in total
Drink five large grogs at the same time
Kill a Grenadier with your bare hands
Eat 500 Gnomes
Collect at least 100 eggs
Get full strength when Level Up
Get full agility when Level Up
Get full luck when Level Up
Get full protection when Level Up
Make the Bard play another song while you are drunk
Dodge 500 times
Get the Jetpack 2000 by cheating
Visit a place you shouldn't actually visit
Kill yourself with metal bars
Complete the dungeon 100%
Find a pair of Deal-with-it glasses
Find all 6 pairs of Deal-with-it glasses