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